Summer Kline is in a bit of a conundrum: she can't figure out if she's into guys or girls. Her stepmom Elizabeth Skylar suggests that Summer could have a threesome - by having sex with a pussy and a dick at the same time, she'd be able to figure out which she likes more! Summer likes the idea, and Elizabeth volunteers her own pussy for the experiment. But they still need a guy. Where will they find one? Just then, the plumber, Dorian Del Isla, comes into the room to say that he finished fixing up their pipes. Summer and Elizabeth immediately get the same idea, and seduce Dorian into joining them for a threesome!