In the sweltering sauna, a sister and brother, both fit and attractive, can't help but notice each other's naked bodies. She, Luce Avery, can't resist the temptation of his massive, hard cock. Starting with a tentative handjob, she strokes him, feeling his length pulse in her grip. Emboldened, she leans down, her long hair brushing his thighs, and takes him into her mouth, giving him a passionate, sloppy blowjob. The heat of the sauna and the taboo situation push them both to the edge, with him climaxing in her eager mouth.