Maya, Ichika, and Kahori are three housewives who live next door to each other in an apartment building, and each has a son in the same grade. One day, Kahori has an affair with Maya and Ichika's husbands. When Maya and Ichika find out, they seduces Kahori's husband in retaliation... But when the sons witness their mothers' womanhood, they can't contain their rising sexual desires and make them suck their erect penises. With no way to turn back for any of them, the six of them end up in an incestuous swapping session involving mothers and sons...