Kyosuke never liked his step-mom and wants her out of the house after his dad died. Megumi proposes that Kyosuke can do anything he wants with her daughter, Yuna, if he allows them to stay. He allows them to stay.
Some lucky dude is sent to teach a wealthy heiress and her two beautiful daughters the ways of the pussy. Together with his busty maid, he embarks on a journey to build up his own personal harem, one dripping wet pussy at a time.