Katie is invited to do a gunge challenge! She is sat on a stool wearing a red dress, nude stockings and red heels. She had series of challenges and questions to answer, if she gets any wrong she gets squirted with yellow or purple gunge! She fails a lot of challenges and gets questions wrong so ends up covered and having to do a punishment. She is instructed to find her punishment on a bowl or yellow gunge the tip it over herself. To her surprise she finds a butt plug! Maybe this isn't so bad after all... she strips out of her dress and panties whilst still being squirted with gunge. She puts in the butt plug and start fingering herself until she cums! The quiz master pours the rest of the gunge on her and she loves it!

(There are close ups of putting in the plug plus fingering back and front!)