Elsa and Arkady, the finalists of the show "Yes, chef!", sort things out live, and the next day Arkady is found dead. While investigating the cook's death, Polina and Igor learn about his double life, the stakes, and dark deeds from the past that could lead to tragedy. At the same time, Polina begins her own investigation into the disappearance of her sister Olya.

Polina and Igor investigate the mysterious murder of an auctioneer, whose identity turns out to be a fake. At the same time, Polina helps Marina Golovina, the wife of her boss, who is hiding her tragic secret. Polina and Maxim Belyakovsky's relationship is developing: he is showing more and more concern, but Igor finds information about Maxim's possible involvement in a fatal accident.

The investigation of the murder of a "fisherman" on the lake takes Polina into the world of professional fake alibis, relying again on her intuition, she tries to uncover a cunning scheme and find the real killer. Polina spends more and more time with Maxim, despite Igor's warnings. Maxim, in turn, is actively interested in the progress of her investigations, especially the case of her missing sister.