Last year, Orié lost her husband in an accident. Now she lives with her only son, Masaki. After his father's death, Masaki quit his job and became a recluse. Concerned for Masaki, Orié continues to take care of him. But that's just the facade. Both Orié and Masaki had been aware of each other as members of the opposite sex even before her husband (his father) was alive. One day, Orié invites Masaki on a hot spring trip. During their journey...
