The salaryman Sachiya lives in an apartment building that, by coincidence, houses only wives whose husbands are on long-term solo assignments. Sachiya is the sole male resident. The women often ask him for help with chores they cannot manage alone and regularly bring him homemade meals out of concern. Unbeknownst to them, Sachiya has an unusually high sex drive that requires several outlets each day. One day, his neighbor Nonoka discovers this secret. After the revelation, the pent-up frustration of the lonely wives gradually turns toward Sachiya, pulling him into a series of increasingly intimate situations. The story follows the evolving dynamics between Sachiya and the various wives as they navigate their desires and the boundaries of their respective marriages.