Takeshi suddenly gained a mother and sister due to his father's remarriage. Both his stepmother Yumi and stepsister Tomoe are stunningly attractive women, leaving Takeshi bewildered. To make matters worse, his father goes on a business trip, leaving him to live with these two women. Misfortune strikes again when a leak in the roof makes Takeshi's room unusable, forcing them to sleep together in a row. Despite desperately trying to suppress his desires for the mother and daughter beside him, they reveal their true nature upon seeing his fully erect giant member and begin to seduce him while sandwiching him.
