There are many realities. In one of the realities you have superpowers, in another you are the president or mayor of the city, in the third the love of your life is connected to you by strong bonds of marriage. The story begins with a letter. A letter from the future that looks like someone's joke. Anna has a chance to correct the mistakes of the other Anna, the one who lives in a different reality and burns out like a candle. The main character has friends whom she loves. She lives with the thought that they will always be together, but no, in that reality they have long lived their lives with their dull routine. With the help of letters, Anna tries to correct mistakes, well, or not correct them, but simply not repeat them.