Two different times are going by in one single house. Seri, a fourteen years old girl lives with her mother, Kiriko. Kiriko has a new boyfriend, and Seri is against it. One day Seri takes out a Christmas tree from the warehouse of her late father....... Sana is a woman who lost her memory suddenly. She doesn’t know where she came from, She wakes up in a ship and meets a woman named Toko. Sana, who doesn’t have anywhere to go, starts to live in Toko’s house.