The strange title is explained by the fact that there are two films in the film: one is about a real day in the life of the real Moscow architect Alexander Petrovich Chernov, his mental crisis; and the other is Chernov’s fiction. There is a different fate, a different country, a different life. It is into this very life that Chernov strives to get into - and for the sake of a trip to Spain he will have to commit betrayal. There, for a moment, the doubles will be nearby and both will be on the verge of death. Who will die in the spring of 1978?