A Moscow student finds a diary that can send its owner to the past or future, as soon as an event that has already been experienced is crossed out in it. The book allows you to move to the same event as many times as you like, and, intoxicated by such power, Alexander begins to correct everything that does not suit him. But fate cruelly punishes the home-grown “time lord” for his insolence, throwing him into a whirlpool of incredible events. Subsequently, Alexander must understand that there is a mistake, why he got the diary and how to be real, and not a shadow of his own fate.