In this classic Soviet comedy, a simple citizen named Semyon Semyonovich Gorbunkov gets caught up in an unexpected tangle when, after an accident on a cruise, he discovers a mysterious package in his trash. What seemed like a mere vacation trip turns into an adventure filled with confusions and misunderstandings. Unbeknownst to him, Semyon becomes the target of a gang of criminals seeking to recover a valuable diamond hidden in his plaster cast.
As he tries to lead a normal life, Semyon entangles himself with a couple of clumsy gangsters who desperately pursue him, triggering a series of hilarious situations. His life turns into a game of cat and mouse, and the hilarity never lets up due to the ineptitude of his pursuers. Alongside his goddaughter and a group of friends, Semyon must find a way to get out of this mess without losing his mind, all taking place in a context rich in irony and social satire characteristic of the time.
With a mix of humor, action, and a few memorable moments, the plot intertwines with unexpected twists that make each scene more entertaining than the last. In the end, Semyon will have to confront his fears and, despite the confusion and danger, discover a courage he never imagined he had.