Polina is a glamorous businessman’s daughter accustomed to a carefree life. After her father’s betrayal, she ends up on probation at an advertising agency. There, over the course of a month, she competes for a position with Roman — an ambitious and principled colleague who sees the world very differently. Their professional rivalry gradually transforms into conflicts, unexpected closeness, and situations where it becomes difficult to separate work tasks from personal feelings.

On New Year's Eve, police lieutenant Ostap Mazur investigates a complicated case. His partner is his future father-in-law, Captain Yuriy Kovalenko, who does not consider the young man worthy of his daughter Lana. Despite their personal conflict, the heroes will have to work together, because the life of their loved one, Lana, is at stake. Will the men be able to find common ground to solve the case, save the capital, and save the New Year's holiday?