Matsushita's daughter-in-law, Mika, and Kikuchi's daughter-in-law, Yuki, who are also neighbors and have the same circumstances that their husbands are away from home, have always been on friendly terms. One day, Yuki's husband collapsed, so she decided to take care of Yuki's son, Masayuki, at the Matsushita family. Before her departure, Mika, who had been told by Yuki that Masayuki was a "virgin", could not hide her interest in Masayuki. And a few hours later, Mika gives Masayuki an experience she will never forget for the rest of her life...
