One day and one night— is that a lot or a little? What can be destroyed, and what can be created?.. In the entrance of the apartment building where the detective novelist Manya Polyvanova lives, her old friend is murdered—the one who had come over the day before for “a little glass of tea” and talked about the eternal. Money and valuables remain with him, but he himself was neither a criminal authority, nor a major politician, nor a rich man! So why was he killed? Alex Shan-Girey, Polyvanova’s lover and, in addition, a genius of world literature, may not look like a “real hero.” He is absent-minded and loves digging into himself. Still, he knows for sure: it is he who will have to deal with the next incident that has gotten his friend involved. One day and one night is very much! They will change all the further lives of the heroes, and they have only one chance to save themselves and their world—to establish the truth.