Katya Proskurina is sure that Vadim Ladyshev will never forgive the fatal mistake she made in the past, and is trying to preserve, perhaps, the most important thing that love has rewarded her with: the long-awaited pregnancy. She must save the child! Vadim, having forgiven Katya, is trying to find her. But when he finds it, an insidious character from the past interferes in the destinies of loving people. A moment of infinity. For some it is a second, for others it is the rest of their lives...