Kitty's sister visits and Kitty thinks she's only there to show off that she's more successful. After going to see an X-rated movie, Eric tries a new move on Donna but it freaks her out; Kelso learns that honesty is the best policy.

Eric gets upset at Donna when she goes backstage at a Ted Nugent concert and then forgets about him; Hyde and Fez get busted for selling counterfeit t-shirts; Kelso tries to be more romantic; and Red and Kitty can't remember how they first met.