While researching for an article on the Pera Palace, Esra stumbles into the year 1919, meets a doppelgänger and finds herself amid political intrigue.

Stepping into Peride's shoes, Esra sets out with Ahmet to correct the course of history, but gets on Halit and George's radar.

As the political stakes rise, Ahmet finds a notebook in the room occupied by Fahrettin, who informs Esra of George's sinister plan for Istanbul.

Halit confronts Esra about her plans with Fahrettin. Esra slips a note to Mustafa Kemal, but her ruse puts others in jeopardy.

Dimitri warns Ahmet about the perils of meddling with the past. As Leyla's fate hangs by a thread, Esra discovers Halit's true motives.

Ahmet battles with the prospect of disappearing forever while Halit gets shot by George's Man and battles for his life. Esra travels to the future to bring back penicillin.

A ring found near Peride's body sheds new light on the identity of her real killer. George makes a treacherous deal with Sonya and closes in on Halit.

Sonya finds key to change the past after confronting Resat, Esra devises a plan to expose George's scheme and foil a wider consipiracy.