Zeynep and Hakan race against time to find Nisan, a chemist who’s their only hope for a cure. A shadow from the past returns.

Vizier, the mysterious leader of the Immortals, curbs Rüya's ambitions and lures Hakan into a trap using Levent. Faysal makes a vindictive decision.

Hakan and the Loyal Ones hatch a scheme to gain Rüya's allegiance. Vizier demands Faysal's help in retrieving the last piece of the key.

The Oracle shares an ominous vision, Hakan visits the past, and Zeynep overhears Vizier confronting Rüya about the key.

A mysterious symbol offers Hakan a clue as he scrambles to uncover Vizier's identity, but his omnipresent foe stays a step ahead.

Nisan accompanies Hakan in his search for the key's missing piece. Vizier threatens to drive Hakan to the edge as a shocking truth comes to light.

Galvanized by a centuries-old betrayal, Vizier turns all of Istanbul against Hakan in a fateful coup de main.

Faysal publicly implicates Hakan in the Hagia Sophia incident. A grief-stricken Zeynep confronts Derya and learns about an imminent attack in the city.

Hakan finds a link between the museum robbery and the Immortals' lethal plan. Struggling under Faysal's influence, Leyla puts Hakan in danger.

Zeynep enlists Leyla's help in pinpointing the Immortals' target for the attack. Faysal goes after Hakan as Rüya's condition deteriorates.

Hakan and the Loyal Ones hatch a scheme against Faysal, who uses Leyla as a bargaining chip — but a shocking betrayal derails the plan.

As Hakan scrambles to find Levent and put a stop to his vindictive crime spree, another Immortal takes control of Leyla's mind.

Tensions come to a head between Faysal and Rüya, who conspires with Mergen against Hakan. Leyla's fate hangs by a thread.

Rüya uses Levent as a pawn in her masterplan. Zeynep and Azra learn that the talismanic objects are losing their powers.

The Oracle tells Zeynep and Hakan what it would take to restore the powers of the talismanic objects. Blood is shed on both sides in a vicious showdown.

While desperately seeking opportunities to fund his next business venture, Hakan comes across a talismanic shirt potentially worth a lot of money.

Hakan has a hard time believing the story of the Protector. Despite being told to stay put so the Immortal can't reach him, he sneaks out to find Memo.

When Hakan and Zeynep arrive at the address to meet with the Loyal One protecting the ring, they find a decrepit house in the middle of nowhere.

Hakan's new job begins at a party celebrating Faysal Erdem's big win with the Hagia Sophia project. Meanwhile, Zeynep follows clues to find the stone.

While Hakan visits the Princes' Islands to learn about his past, Zeynep and Kemal head to the Mausoleum of Mimar Sinan to look for the stone.

Hakan struggles to choose between his new love and his duties as the Protector. After sending Emir back home, Kemal heads out in search of the dagger.

With no time to devise a better way to circumvent the museum's security system, Zeynep defers to Hakan's plan, which comes with risks.

Zeynep seeks Timur's help for her dad. Faysal Erdem disapproves of Mazhar's recent actions. Leyla feels conflicted about her relationship with Hakan

While being led away from the crime scene, Hakan spots something unexpected. To learn more about the Immortal, Kemal risks his status and much more.

Blinded by love, Hakan disregards his training and his duties as the Protector. Leyla informs him that an Immortal's blood contains a secret power.