Mark is stuck in one day and relives it over and over again. The constant repetition of the same thing leads to an eerie melancholy, but Mark learned not to lose heart, but to notice the many wonderful little things that make this day wonderful. He began to explore his hometown, observe people and events, and also made a map of perfect moments that bring joy. However, after meeting with the carefree girl Margaret, Mark realizes that not one is stuck in this moment. True, Margaret has completely different goals and ways of spending this endless day.