A month ago in Moscow, there was an outbreak of an unknown disease with a 100% fatal outcome for the men, the girls turned into mysterious and bloodthirsty creatures, murders. Survivors wake up in the morning from the unexpected screams of the mutants that penetrated the base. It turns out that someone opened the door to the mutants from the inside. But who opened the door and why?

Valera's plan to break the checkpoint failed. Nick accuses Scatha of inactivity and softness and breaks off relations with him, but in fact, the reason is much deeper - the girl is in love with another member of the group and can not hide her feelings anymore. Who is in love with the impudent Nick? Who will betray friends to save himself?

Marina voluntarily goes to the laboratory of the corporation "Summit", after which she returns to the base, not noticing the shadowing. The journalist Katya gets to Moscow, where she immediately faces ruthless black-eyed virgins. Mitya is abducted by priests who honor the goddesses of death with black eyes, which, in their opinion, are called upon to purge the world of filth.

Valera brings Katya to the base of the survivors, who is looking for evidence of the involvement of Vershina in the creation and spread of the virus. Valera and Katya go on scouting to find a spare base. During the raids, they capture a mercenary who collects capsules from the ear shells of the mutants.

Nadia in search of her lover leads to a base of survivors a whole flock of individuals, both laboratory and wild. The survivors discover that they were left without weapons, someone betrayed them. Taking a blow at himself, Mitya takes the mutants from the base.

Mitya is shocked that Nadia understands him and even tries to communicate. Katya offers Valera mutual cooperation, the girl is interested in any information about the "Top", and in return she offers compromising information to one of the survivors.

Lina secretly leaves the base and goes in search of his mother, in the city she almost becomes a victim of mutants. To Nadia brings back the ability to understand and speak, she comes to her senses and learns to control her superpower. Nadia tries to accept herself as she was made by the virus, but she is very afraid of harming Mitya. Valera cannot accept the fact that Aizhan is an experiment.

Nadya and Mitya are walking along the empty city. Katya watches over them. Feeling the girl, Nadia turns into a mutant. Valera refuses to take part in the studies of the "Summit", he is against the experiments on Aizhan.

Nadia decides to conduct an experiment, she calls the murders into the mansion to check how much they obey her, and whether she can control them. A large accumulation of mutants alarms Dr. Bryl, he guesses the causes of the congestion and sends patrols for the alpha female. Valera fell in love with Katya, but as soon as she approaches the shelter, Aizhan screams.

Inga Belova understands that Mr. Haushofer expects results from her, she has no choice but to go to negotiations with Nadia and Mitya. Inga informs them that soon regular troops will enter the city to clean up the territory, all infected will be killed. Nadia is the only chance to save mutated girls. Mitya and Nadia agree to take part in the development of a vaccine against the virus.

Love does not mutate, so Aizhan saved the memories associated with Valera. She increasingly wakes up because she feels like she is losing touch with her beloved, who is secretly in love with Katya. After a conversation with Andrei, Katya realizes that, perhaps, Valera is in danger. The family in which Lina fell, is not so friendly.

Inga orders Professor Bryl to conduct an abortion and to use the fetal stem cells to develop the vaccine. Loboda continues to keep Valera in confinement, despite the fact that this does not give the desired results. Katya, suspecting Loboda is deceptive, is ready to sacrifice her own life to save Valera. Nadia, learning about Inga's disposition, is enraged...

Several young people find themselves locked in a bunker. A mysterious man informs an esteemed scholar, professor Radomskiy, that his daughter has been kidnapped and forces the father to go back to work. The professor is tasked with transporting a tube with a strange substance, but a road incident sees the capsule fall down into the drains and into the subway air conditioning systems.

A mutating virus rampages through the population, causing massive casualties. The young people locked in a bunker are trying to figure out why they're being held against their will. Mr. Glotov, is responsible for the development of a vaccine that would create a new race of people is informed that only young women seem to escape death after being infected with the virus.

After Jenya's death, panic grows into horror and despair. A rescue worker, Max, returns to Moscow to find his sister. Professor Radomskiy tries to escape his captors. Someone locks Ira and Mitya in the walk-in fridge. Max manages to find the last living doctor in the hospital his sister worked at.

In a fit of rage, Valera smashes all the surveillance cameras in the bunker. The «Summit» corporation board of directors is concerned with the virus leak. Glotov is convinced that the situation in Moscow plays to the corporation's advantage because they've never been this close to creating the 'perfect human'.

A man stumbles into the bunker, covered in blood. The captives take his key to the bunker and escape. Once they reach the surface, a small group leaves on a scouting mission. Everyone they see on their way is dead. In an abandoned supermarket, they run into some strange young women who look like zombies who chase after the group.

The zombie women kill a group of soldiers with their horrifying wailing. One of the women is presented to Glotov who orders the start of intensive research. Back in the bunker, Irina and several others try to save the bloodied man by going to the hospital to get some blood for a transfusion. One the way their, the man tries to tell them something important.

The guys repair some cars to leave the city. Aijan is attacked by one of the mutants, but Valera manages to fend it off. Marina and Pasha still haven't come back so Nadya says it's not worth waiting for them. The group celebrates their upcoming journey.

Outside, Marina is shot with a tranquilizer gun. She wakes up in Glotov's laboratory. She recognizes one of the lab assistants as Petya, her boyfriend. Sasha finds out that they've been locked inside the bunker as part of a secret project, run by the «Summit» corporation. Ira can't believe her father conducts experiments on humans.

Stas and Natasha, while looking for help, get into an accident, destroying their car. The rest set out to find Radomskiy through an underground tunnel system. Natasha is bitten by one of the mutants. Stas manages to escape and Petya finds Pasha inside the bunker.

Pasha asks everyone to meet up in the park before leaving town. Valera objects, but Ira convinces everyone to go. Once there, the group gets arrested. They meet Pasha inside the prisoner transport vehicle. Glotov gives orders to blast the city with ultrasound.

Glotov is told that the mutants have started to die out. Aijan is looking worse. Anatoliy, Professor Radomskiy's assistant, sneaks into the «Summit» corporation lab. Ira brings the group to her father. Radomskiy admits he doesn't have a vaccine yet.

Radomskiy tells the group about project 'Cleito' and his attempts to stop it. The lab is captured by Glotov's people. Radomskiy claims he infected Glotov with the virus and agrees to provide the vaccine is Ira and the rest of the group are allowed to leave the city.