Katherine St James is a sweet young college student whose grades are slipping in math. While discussing her difficulties with her mom, Lily, the girl admits that the strict spankings she received growing up have helped her to stay on track in the past, and that receiving one now, even though she's grown up, would possibly help her better focus. Mom hesitantly agrees and starts giving a spanking over Kat's panties, but Kat is worried that it's not having the full effect it did when she was younger. She mentions that she has been told her good friend's parents spank her on her bare bottom when she's in trouble, and wonders if it might be more effective that way. Mom agrees and realizes that she needs to intensify the experience now that her daughter is grown. The spanking soon becomes very effective when Lily tells Kat to go fetch her some implements to use. Kat returns with the hairbrush, a large wooden paddle, and a thick leather strap, as she takes her educational goals seriously! Kat is soon squirming, crying, and pleading for the spanking to be over, regretting her request for a more effective spanking as well as regretting her past poor study habits. Long and severe session ends with 100 with the heavy strap, long after Kat feels she has had enough!