Cheerful student Lily Larimar goes to school to be a nurse, but she needs someone to help her practice her sponge bathing skills. She can't think of anyone besides her stepbrother, Tony, to help her. Tony is reluctant, but agrees to strip naked and climb into her bed with only a washcloth covering her penis. Unsurprisingly, having her hot sister sponge him off gives Tony a raging boner that only gets worse when Lily's boobs poke out of her shirt top. When Lily notices Tony's boner, she says that he's fine, her teacher has shown her how to deal with a patient who gets hard. Putting on some gloves and lube, she begins rubbing Tony into ejaculating, which will make her boner go away. When Tony can't cum right away, he suggests that Lily show him her boobs again. That visual stimulation isn't enough, so Tony makes it his mission to talk Lily into something harder. It takes a bit of persuasion, but she agrees to lose the gloves and try to suck him off. Now that Lily is engaged, she slowly and sheepishly allows herself to be coaxed into undressing. Tony can't believe how hot his stepsister is! By the time Lily's shorts and thong are on the floor, Tony can't wait to roll her onto her back and bury himself in that soft, bare pussy of hers. Lily gets on her hands and knees next so Tony can provide some doggy style pleasure. She Then she finishes herself off with a wild stiff ride! Seeing Lily bounce on her cock is almost enough to turn Tony on. but hold on until he gets another blowjob. Putting his load in his sister's mouth, Tony offers up his body every time Lily wants to go back to sponge bathing.