Two years after breaking up, Mizuki and her ex meet again. Both are now married, but neither can forget the uninhibited sex they once shared, so they give themselves one day to cheat. Knowing she now belongs to someone else only makes it hotter. They lock themselves in a hotel for deep-throat, saliva swapping, ass licking, spanking, piss play, cum swallowing, and repeated creampies—then check into another room to keep fucking long past the time they were supposed to go home.