Kiyoka is a lesbian but has a husband. Kiyoka was infatuated with Mika, her husband's mother. Raised by her mother alone, Kiyoka loved her mother very much. However, being blood-related became a hindrance and she couldn't take a step forward. Mika was just like that mother. One day, she took advantage of her husband's business trip to invite Mika on a trip. To make her mother-in-law fall into lesbian pleasure by this day...