Makoto Suda harbors a secret. Caught in a dual identity, he acts as a mother to his stepson Takashi at home. At his job, he portrays an ordinary salaryman, entangled in a two-person love triangle involving his other self and his coworker Natsumi. The narrative tracks Makoto's efforts to balance his life while he awaits the ideal moment to "come out" of his dilemma.