The main character, on the way to a Christmas party, meets a girl to whom he declares his love. They agree to meet on New Year's Day, and Vadim makes Anna a rash promise not to notice any more women. A magical object he accidentally found and the unusual arrangement of moles on his hand in the form of an “infinity” sign fulfill Vadim’s promise literally: from now on, each of the six days until he meets He will have to spend Anna in new circumstances, in fact, in other worlds. But only if the hero is able to resist the love of the woman he met in this world, he moves on to the next day. At the same time, the young man remains in the dark about who he really is, and remembers himself each time only one step before the next test.