You've been packing all day because tomorrow you leave for college. Your stepmom isn't happy about it and gives you a long lecture about how you should have stayed in state and not gone out of state. Finally, she relents and admits she's just going to miss you and wishes you had decided to stay home.
You continue to pack and start realize your stepmom might be flirting with you. Showing off her ass and her shirt pulled down to maximize the view of her great tits. It becomes too obvious and you finally stop her in the hallway. She drops to her knees and sucks your dick and right as you cum your stepdad starts coming up the stairs. Your stepmom wipes the cum from her mouth and gives your stepdad a kiss. She realizes she's taken this too far, but you know it's not far enough. Soon enough you'll be cumming inside your stepmom and have her begging for more.
A slow burn, building to a hot final scene.