Brick Danger is struggling with his math class, and his stepsis Ava Haze offers to help. As they sit together at the kitchen table, Ava's real taboo desires become clear. She starts by subtly brushing her leg against Brick's, then gradually moves her chair closer until she's practically on top of him. Brick, trying to focus on his work, can't ignore the growing heat between them. When Ava 'accidentally' spills her drink, she uses it as an excuse to straddle him, grinding her hips against his growing erection. Their tutor session quickly escalates into a hardcore family affair, with Ava riding Brick's big cock, her small tits bouncing with each thrust, until they're both spent and breathless.