Ririko, a mother who has finally started a new life as a single woman, after her daughter Natsumi, who had been raised by herself, got married and the burden on her shoulders was lifted. However, one day, she is called by Natsumi and consulted about her disagreement with her husband Kenji. Ririko is worried about Natsumi, who has not been able to afford to take care of Kenji, who has been entrusted with a big job recently and is stressed out. However, Kenji is gradually attracted to Ririko's overflowing maternal nature, which Natsumi lacks in attention to detail and concern for.
