Not much of a plot, and what there is has a few holes.

Starts off with Rebel hunting for missing panties and accuses her sister Kimmy of stealing them, as her mother's ass is too big to fit into them.

Kimmy says she caught her mother sniffing her panties and left a trail of panties for the mother. The mother duly fell into the trap, was caught by Kimmy, and they ended up having sex.

All this was a phone conversation and Kimmy is heard but not seen.

A disgusted Rebel decides to have a shower to feel clean after this conversation.

Bloop 1 - she is seen on the toilet, wipes her ass with a tissue rather than toilet paper - AND DOES NOT WASH HER HANDS.

As she goes to the shower, she sees her naked mother (Elexis) hiding there spying on her, sniffing Rebel's panties.

Bloop 2 - these are clean panties stolen from Rebel's drawer. The point of panty sniffing is to get whiffs of pussy, not detergent.

Elexis pushes Rebel into the bedroom and begins to maul her. Rebel makes token physical resistance while mouthing protests, which turn into pleasured moans.

Elexis and Rebel fuck each other to orgasm.