Recently, "Rina's" husband has been cold towards her. She doesn't know why, so she consults her father-in-law about it. However, he pretends to listen but instead embraces Rina. After that, he continues to make advances towards her under the guise of teaching her how to seduce her husband. Despite feeling uncomfortable at first, Rina finds herself enjoying the erotic acts...

「りな」の夫は最近冷たい。理由がわからないので義父に相談する。しかし義父は相談に乗ると見せかけ「りな」を抱いてしまうのだった。その後も夫の誘い方を教えると称し、彼女に繰り返しエロ行為を行っていく。また「りな」も気持ちよくなってしまい流されてい…。