The Pit (Ç​ukur), that İdris Koçovalı has built with his own hands, is the heart of İstanbul; in fact it is Istanbul! There's no room for any danger that could threaten the neighborhood. Yamaç is a daytime chemist and a nighttime musician who has ran away from this neighborhood years ago for some reason. The young man's life changes as their paths cross with Sena who is a feisty personality like himself. While the two of them are dragged into a passionate love affair; Çukur is on the verge of a storm with Vartolu's arrival. The same storm will drag Yamaç towards The Pit and his past that he has abandoned a long time ago. After all everybody will ultimately return to The Pit.

Yamac takes a new turn in his life. His brother Kahraman was murdered. His father has been taken to the hospital. War begins between Vartolu and his men and the pit. Yamac's mind is in Sena at the same time. Sena goes to Izmir next to her family. However, they will meet soon and find themselves in great danger.

Vartolu is determined to destroy every obstacle in front of him. But he is also unaware that he hit a hard rock like Yamac. Yamac will bring Sena to your father's house after the attack. In the Sultan's eyes, Sena and Sultan, who are regarded as the people to disrupt the order of the family, face each other. Meanwhile, Yamac is willing to make peace with Vartolu. While a surprise name will witness this moment of peace, the balances between Yamac and Selim will also change completely.

Idris finally opens his eyes. A whole new era begins in the pit. The reaction of Idris, who sees Yamac at home, will be tougher than predicted. The great confrontation between the father and the son will overturn all the balances in the pit. Idris, who met Sena, learns that she is the wife of Yamac. Yamac not only struggles with the turbulent period at home, but also tries to find the traitor among them. Yamac's interest in the collection of the singer named Dogukan dragged him to the very heart of a great danger.