Frankie is sick and can't go to the Go-Kart race, so the Zhus try to help her get better in time.

Num Nums gets taken by Madge's cat, so the Zhus try to rescue her while Frankie distracts Madge.

When Frankie gets two friendship bracelets from her aunt Zia, the Zhus compete to see who is Frankie's best friend.

After learning that Madge has won the annual go-kart race every year, Frankie and the Zhus enter the go-kart race so they can break Madge's winning streak.