Upon reaching the train station to death, a dejected soul is informed that he is "lucky" and will have another chance at life. He is placed in the body of a 14-year-old boy named Makoto Kobayashi, who has just committed suicide.

After the death of his wife, Kenzaburō receives an unexpected letter from beyond the grave. His late wife asks him to travel to Lake Windermere in England with their son to scatter her ashes. Plagued by sweet and painful memories of his wife, Kenzaburō travels to England from Tokyo to fulfill her final wish, but the father and son's fraught relationship threatens to upend their journey.