Housekeeper Katya became the unwitting reason for the breakup of Marina and Maksim's relationship right before their wedding, which is why she lost her job. Businessman Oleg Danilov offered her a fictitious marriage in order to take his son away from his ex-wife. Katya agreed - the fee for this deal will help free her brother from debt. Having become Danilov's wife, Katya found herself in a whirlwind of events: the unexpected arrival of Oleg's mother, in front of whom she had to play the happy newlyweds; Maksim's persecution; "attacks" of bandits; attempts by the "ex" to return Oleg... Overcoming these obstacles, will Katya be able to answer the question - how much does love cost?