Garage watchman Yerkin tells a fascinating story about insane jealousy. The life of Anton Serov and his wife Lucy has been debugged like clockwork for more than ten years. But one day, a young, beautiful woman, Lika, buys a nearby garage. She is active, ambitious, and in ordinary life she does not see people like Serov at close range. But one day it breaks down. Lika asks Serov, as a man who understands the iron, to see what happened. They begin to communicate. And Lucy instantly starts up. Her excessive jealousy leads to unexpected consequences...