On a cold New Year's Eve in St. Petersburg, a group of friends decides to celebrate with plenty of drinks and good music. Amidst laughter and anecdotes, one of them, a man named Zhenia, finds himself in the midst of a wild twist of fate. After a day of festivities, he gets drunk and, in a fit of madness, mistakes the way back home. Instead of returning to his modest dwelling, he ends up entering the house of a completely unknown woman.
The woman, Nadya, is a sweet but somewhat lazy young woman who is waiting for her fiancé, who, in the irony of life, has not arrived for their date. Zhenia, in a state of utter intoxication, begins to navigate this strange house, unwittingly immersing himself in a series of comedic and romantic situations, while Nadya finds herself caught between confusion and attraction. As the night progresses, misunderstandings pile up, and the unexpected encounter turns into a genuine love entanglement.
Under the watchful eyes of friends and rivals, the tender romance between Zhenia and Nadya begins to blossom, revealing that fate has its own sense of humor. In a city where chaos turns into magic, both will discover that sometimes love is found in the most unexpected places, even when it seems like a complete accident. Laughter and unexpected twists keep coming until the sun finally peeks out, promising a new beginning.