After returning home from shopping, married woman Reiko unexpectedly meets her brother-in-law, who tells her he's researching methods to relieve shoulder stiffness. Intrigued, she agrees to let him try one of his techniques. The hypnosis he performs quickly renders Reiko completely obedient, leaving her powerless to resist as she surrenders herself to her brother-in-law. This sudden twist in her ordinary life begins to reshape her existence in ways she never imagined.