Junya and Nanami have been in a relationship for 15 years. They make a documentary together, but, due to differences of opinion, they decide to break up. While Nanami stays in Tokyo, Junya leaves for Paris to find inspiration for a new creation. One day, Nanami suggests to Junya that they work on a new documentary "following a separated couple," using themselves as main material. Expecting a new meeting, Junya and Nanami try to find out more about love, life and creation. During this time, their beautiful and sad video letter comes and goes between Tokyo and Paris.