Saki who married into the Aikawa family as his second wife. She lives with her very kind husband, Ryuichi, and her slightly twisted son-in-law, Kenji. A small family that is awkward, but lives hard, believing that they will surely get along someday. One day, a man suddenly appeared in front of Saki. In front of Kenji, he talks about Saki's secrets that he never wants people to know... This incident triggered the family who was about to get together.