Satoka Aida, a 17-year high school student, comes to know that her mothers hospitalization for cancer is disturbing the harmony of her home life. Satoka rarely communicates with her father like in many Japanese families, and without her mother, her relationship with her father deteriorates. Satoka one day finds an unsent love letter written by her mother long ago to her first love. Satoka on reading the letter sets out to fulfill her mothers long lost wish to meet her first love under the Cherry Tree of Wishes in her mothers hometown. But her mothers first love, Shinchio Fujiki is no longer the dashingly handsome young man mentioned in her mothers letter.