Natsuki Subaru is summoned to a parallel world on his way home from the convenience store. He's entranced at first by the fantasy world suddenly stretching before his eyes, but the cute girl he believes summoned him is nowhere to be found, and soon enough he's utterly lost. Then a gang of punks surrounds him, but he quickly learns that he doesn't have any of the powers that he thought all people transported to a parellel world should have. Just when he's about to be beaten senseless, a girl appears...

After being attacked by someone the first time, sliced open by Elsa the second time, and stabbed in the back by punks the third time, Subaru should have been dead, but found himself back where he started in the same parallel world every time. He finally realizes he’s acquired the power to go back to the time and place he started from, which he calls “Return by Death.” In hopes of changing the fate awaiting Felt, Satella, Old Man Rom, and himself, Subaru takes off for the fourth time.

Subaru attempts to buy the insignia from Felt and return it to Satella before Elsa arrives at the loot house… but Satella arrives before the negotiations are complete, and Elsa still attacks them.

After being badly wounded by Elsa, Subaru somehow survived and awoke in the mansion of Margrave Mathers, in the Kingdom of Lugunica.

Subaru now lives and works in Roswaal’s mansion, working with Ram and Rem, and finally getting Emilia to agree to a date with him. But the day of their promised date never comes as Subaru keeps going back to the day he first awoke in the mansion. He’s confused at the thought that he Returned by Death despite having no memory of experiencing anything deadly, but he’s determined to repeat his previous actions up to the point of fulfilling his promise with Emilia.

Subaru’s first day at the Roswaal mansion begins for the third time. The first time, he grew weak and died of unknown reasons in his sleep, and the second time, he was killed by an attacker. The sound of chains that he heard as he died the second time replays in his mind, waking him in a terrified, cold sweat. He has no idea what the killer is after, let alone who it is, so he makes a plan to leave the mansion on the fourth night and watch for the attack to happen.

Standing before Subaru is someone he never expected. The truth of the attacker’s identity leaves him bewildered, and he feels everything crumbling around him as he dies yet again. Then, for the fourth time, he awakes on his first day at the Roswaal mansion. This time, the night of the fourth day passes without incident, and Subaru is stunned as he greets the morning of the fifth day… but then the situation takes an unexpected turn.

Subaru’s first day in Roswaal’s mansion begins for the fifth time. Determined to save everyone this time, he makes it a point to keep his best smile on his face in order to earn the trust of the mansion’s staff. But although he works his hardest to make them like him, his body begins to have trouble keeping up with his heart’s intentions. Soon Emilia is unable to bear the sight of him struggling any longer and takes an unexpected action…

The scattered pieces of the puzzle finally come together, and Subaru realizes for certain that the shaman who cursed him is in the village at the foot of the mountains. He heads there with Ram and Rem and makes sure all the villagers touch him so that he can find out, with Beatrice’s help, who cast the curse. But the truth he finds is not what he expected, and he finds himself rushing toward the village again…

Subaru risked his life to save the children from a pack of Ulgarm, but he was so powerfully cursed that there could be no saving him. Even Beatrice is unable to undo the complex web of curses on him, and says he’ll grow weak and die within half a day. The only way he can survive is if the entire Ulgarm pack is defeated, but time is not on his side. Subaru is ready to give up when he learns that Rem has gone into the forest by herself…

Knocked unconscious by Subaru’s attack, Rem dreams of an event in her past that she and Ram would rather forget… a sin for which Rem feels she can never be forgiven. After waking up, she tells Subaru that she’s just committed the same sin again. When the three of them are moments from being cornered by the Ulgarm pack, Subaru takes off to draw their attention so Ram and Rem can escape.

At the order of the council of elders that manages Lugunica in the king’s absence, Wilhelm and Felix visit Roswaal’s mansion as emissaries. Emilia is required in the imperial capital right away, so Subaru asks her to take him along. Emilia tells him this won’t be a pleasure trip, but a push from Rem and Roswaal ends in her agreement, so Emilia and Subaru head to the capital. Now all of the candidates to be Lugunica’s next king are gathered, and the royal selection is underway.

As Emilia joins Priscilla, Crusch, and Anastasia in a meeting of the royal selection participants, Reinhard enters the hall with Felt. According to a new prophecy seen on the Dragon Stone, there are five priestesses with the potential to be the kingdom’s next ruler. Reinhard announces that Felt is the fifth priestess, meaning it’s time to formally begin the royal selection, but Felt refuses to have any part in it.

“I just wanted to protect her. That feeling wasn’t a lie. Where did I go wrong?” Rejected by the one who meant more to him than anything, Subaru is still unable to recognize that he may have done something irreversible. He then finds out that some disturbing movement has been detected within Roswaal’s domain, where Emilia and the others are. He’s certain that he can save them somehow, so in spite of Rem and Crusch’s opposition, Subaru makes his way back to Emilia…

Upon returning to Roswaal’s mansion, Subaru is greeted by an unbelievable sight and wails that this was not what he wanted to happen. Stricken with despair, everything before Subaru starts to go white as, finally, he hears a voice: “You were too late.”

Subaru wakes up in front of the appa shop once again. Feeling boxed in on all sides due to his own lack of power to change the situation, he seeks the help of others. First, he seeks the help of Crush, who flatly declines any further involvement passed her contractual obligation of healing Subaru. His requests to Anastasia and Priscilla similarly go unanswered despite his pleas. Having wasted too much time, Subaru decides to at least try to get Emilia away from Roswaal’s mansion as early as possible. He then takes a dragon car back home with Rem.

A mysterious figure appears before Subaru and his traveling companions. As the looming beast attacks with a deafening bellow amidst the darkness and fog, Rem determines that it will be too difficult to escape…

Subaru laments that he could not do anything or save anyone, and has no options left. Exhausted, he suddenly takes off running at full speed as if he’s made a decision…

To save Emilia, Subaru approaches Crusch to negotiate the formation of an alliance. His terms are a bit difficult for Crusch to believe, but she can see that Subaru isn’t lying.

Subaru has devoted everything he had, and done all he could do. His passion has captured Crusch’s heart, as well as Anastasia’s cooperation, and they all enter into the battle against the White Whale together.

Subaru and Rem are at a loss for words. The battle against the White Whale, which seemed to be going in their favor through attrition, suddenly took on completely different proportions. With their tactical superiority and advantage quickly dwindling, the combined forces all but get tangled up in the threads of despair. That’s when Subaru decides to yell out his next move…

With the battle against the White Whale now over, the mercenary force setting up the blockade of the road comes back, Julius at the lead. His arrival gives rise to mixed feelings for Subaru, but after Julius sincerely thanks him for ridding the world of the monster, Subaru finds it in himself to apologize for his past behavior. The group now looks forward, ready to enter the Mathers domain…

The group is making its way in the Mathers domain when suddenly everyone but Subaru disappears and a strange, suffocating atmosphere seeps through the forest. He quickly figures out it is nothing but an illusion, and with help from Julius on the other side, dispels the barrier for everyone caught in it. However, arriving at the village doesn’t make convincing the residents to evacuate easy. Time is running out, and the invisible hand of sloth makes its presence at the back of Subaru’s mind more and more nefarious.

Subaru devises a new plan to correct the mistake of the blank letter sent to the manor, encourage the evacuation of the villagers and move Emilia away from her current location. With these preparations complete, he enacts the second part of his plan designed to cut off the Fingers before severing the Unseen Hand once and for all.

Emilia is hurriedly ushered to the capital along with the villagers under the orders of a mysterious benefactor while escorted by a rag-tag group of individuals from various and opposing factions. She has but one question on her mind: who could this man be and why would he go so far? Meanwhile, Subaru and Julius face off against the Archbishop of Sin Betelgeuse for the ultimate time. Unfortunately, he is very persistent even beyond death, belying his nature of Sloth. Subaru is relentlessly chased while he catches up to Emilia to save her one last time and answer her question.

Subaru learns that objects in this new world are named very similarly to the ones in his own.

Felt teaches Subaru how time works in her world.

Emilia and Puck discuss Reinhard, the Master Swordsman, and his many divine protections.

After being hired at Roswaal’s mansion, Subaru has a chat with the maid sisters Ram and Rem.

Roswaal and Subaru have a chat while sharing the mansion’s luxurious bath.

Emilia continues to insist on doing something to thank Subaru for saving her.

Subaru asks Beatrice about the library she maintains for Roswaal.

Subaru is still embarrassed about resting his head in Emilia’s lap, and the maid sisters aren’t about to let him forget it.

Subaru learns just how kind and considerate Ram can be.

Subaru tells Ram about the promises he made to Rem while they track the mabeasts through the forest.

Subaru and Emilia reunite after the mabeasts are defeated and his curses erased.

Subaru wakes up to find himself in a classroom where Emilia is a teacher. Attempting to ask her about Puck, she tells him that the familiar is the school’s principal. After his questions disrupt class and he is sent to stand in the hall, Subaru vows to return to his own world, before wondering what world that really is.

Subaru is shocked to find that he is in the same class as Felt, and even more surprised to discover that their teacher is Beatrice. When he expresses his disbelief that someone who looks so much like a child could be a teacher, she tickles him. He tells her that he thought she was going to suck his mana out, and both her and Felt mishear him as saying “mayo.”

Subaru finds himself in a maid café with two very familiar maids serving him.

Visiting a café where Beatrice and Anastasia work, Subaru orders their most popular item, a Meow Meow Omelet. The omelet is delivered by Puck, who then eats it.

At an arcade Subaru meets with Felt who finding her arcade coin while explaining she’s having a game contest with Reinhard. Failing to retrieve her only coin Emilia suggests a game machine to Felt that give coins.

Once again Subaru met Felt reaching for a coin under the crane game machine, this time Priscilla walks in on them. Felt managed to retrieve her coin this time and is about to head off to contest Reinhard when Priscilla produced an “Old Man Rom” plush toy offering to give it to Felt on the condition that she bow down to her. Felt rejected the offer as the contest is between herself and Reinhard and it would be wrong to obtain a prize that way, she then heads off to get a toy.

Subaru attends a doujin event (Comiket) and is surprised that Rem is in a circle. He proceeds to read the book she made and it describes everything that Rem knew about Subaru to a disturbing accuracy. As expected zero volumes were sold and Rem used her famous quote “Let’s start here from square one, no from zero!”

At the same event as the previous episode, Subaru found Crusch and asked her what she learnt from the event, awhile later Priscilla joins in the conversation. Subaru thought that Priscilla is about to say unpleasant things about the attendees of the event however to his surprise she express positive interest in them. Priscilla then forcefully drags Subaru to the 18+ section of the event with Crusch in tow.

Subaru appears at a beach (reference to fanservice episodes), he compliments Crusch’s and Rem’s swimsuit accordingly. Rem suggests that they play Suikawari since they are at the beach. Crusch was the first to try and she claim to be able to hit the watermelon in one swing. Rem is up next however she used her watermelon designed Flail instead and smashed the watermelon. Anastasia popped in and expressed her disappointment for not being able to sell the ruined watermelon.

Subaru wakes up to find himself immobile and buried up to his neck under the sand and thought it was Ram being mean to him. Emilia cleared up the misunderstanding and explained they were trying to prevent him from getting sunburn. Eventually Subaru requested help from both of them to be freed and while Emilia was digging up the sand he got his reward.

Subaru visits a convenience store to buy a drink, but its owner is a very shrewd business woman…

Subaru returns to the convenience store… and this time Emilia stands behind the counter! It’s the situation he’s been waiting for!

Subaru visits a bookstore to buy a copy of a favorite book, but the employee at the register doesn’t trust his motives…

Subaru and Emilia wait at the bookstore for the rest of the gang’s arrival to take advantage of an exciting new release!

After being saved from the Witch Cult, he is now working for Subaru. He recalls moments during those events and sees him as an old friend that he had met before. He thought to himself that he may be from Kararagi, but he wasn't sure. Subaru enters the carriage and gave him encouraging banters, which made Otto a little bit embarrassed. He then tells Otto to hurry and meet with Roswaal.

Petra and Otto meet for the first time.

After encountering Garfiel and escorted to the Sanctuary, he finds himself stranded in the middle of nowhere. He suddenly noticed that Garfiel was right next to him. He tells Otto to go to Roswaal, but he was told by Ram to not visit him. He then asks him how did he know Frederica and Garf are related. Otto didn't understand what he meant and he thought that Subaru told him that and he insists that it was due to their sharp teeth, but Garfiel didn't get it. The episode ends with them trying to find the saying is either "The rushing ladybug folds leaves" or "The rushing ladybug blows up".

Otto recalls at the time when he before he joined Emilia's camp, he would compare Emilia to the Witch of Envy because she has the same looks as her. But seeing her that she works hard to help others, he reconsiders her as a friend rather than an enemy.

Otto returns to Garfiel to talk about the deal they had made. He had decided to turn down the offer that Garfiel had made and had sided with Subaru. And with that, he returned the ore to Garfiel and quickly escaped to search for Subaru.

Six days had passed since Petra worked as a maid in the Mathers' Domain. Frederica recalled the time that Petra wanted to apply to work as a maid. She warns her that working as the mansion's maid takes a lot of hardships and dedication and it isn't easy to do. Despite her warnings, Petra is still obligated to work as a maid. And so, Frederica accepts her.

Ricardo writes a report of the mission after the subjugation of the White Whale and the battle of the Witch Cult. Ricardo asks her about her report, but Tivey enters and told him that she didn't and he had to do it for her. Mimi exclaims that she did her report and takes out her book. They read through the report and recalled the time they had rescued Otto. Anastasia entered the room and sees them reminiscing what happened during that mission. Ricardo recalled that she and the Pearlbattons had been tied up before in the past, making Anastasia feel nostalgic about that time. The conversation ends as they all head to the meeting that they appointed for their next job.

Petra recalls the time she first met Frederica.