The Rodimtsevs, a forty-year-old married couple who have been married for two decades, suddenly discover they've had enough of each other. Court proceedings, divorce proceedings, and an apartment swap. However, not everything is so simple: the husband, Narkis Rodimtsev, the chief expert at the perfume factory, suddenly loses his greatest gift—the ability to distinguish smells; his wife, Lilia Rodimtseva, gives up on her scientific work; and their son, Dima Rodimtsev, leaves Moscow to enroll in a naval academy...