Bored siblings, Michelle and her stepbrother, find themselves in a tense standoff, each trying to outdo the other's annoyance. Their tension boils over when Michelle, thinking she's alone, starts pleasuring herself in the bathroom. Caught red-handed, they argue, but later, Michelle propositions her brother. They strip, Michelle taking in his stiff cock as he jerks off. She envisions him inside her, but their moment is cut short by an unexpected intrusion.