November 1941. A group of Soviet soldiers led by a young lieutenant Ivan Gorchakov is on a mission to destroy German artillery base and stop Nazi advance to Moscow.

Katka dreams of becoming a cool fashion designer, but in an urban-type settlement with a funny name, her talent is somehow cramped. And then her mother forces her to get married and Katya decides to run away to Moscow. But then something strange happens — the girl gets caught in a time loop of one crazy day. She has to figure out the reasons for this cycle of events and find the only right way out.