Tim, the dutiful step-son, tends to his mom's chores, earning her gratitude. As he finishes, Kate, his step-mom, thanks him, her voice husky. Tim notices her nipples hardening under her thin top, her breath hitching. Kate, flustered, excuses herself, but Tim follows, concerned. He finds her in her room, fingers buried in her wet pussy, legs spread. Shocked but aroused, Tim watches as Kate, lost in lust, fingers her tight, juicy cunt, moaning. Unable to resist, Tim joins her, his fingers replacing hers, making Kate gasp. He feels her clit throb, her pussy gush, as he brings her to a real, shuddering orgasm.