Mel catches Joe with a woman in the house in the middle of the day, someone Joe tries to pass off as a girlfriend. Mel believes him at first, asking him to be discreet with the kids, but later overhears a conversation and discovers that Joe and this woman are secretly tracking down Mel's con-man brother-in-law, and she questions Joe's motives for wanting to be her manny in the first place. Meanwhile, as Joe's been pretending to be a spy, he's totally missed the fact that Ryder seems to be slowly "losing" all of his new belongings at school.

As city council woman, Mel is asked to participate in a local - Dancing with the Stars' fundraiser - forcing her to step out of her comfort zone. Joe steps in to help train Mel for the competition, but when personalities clash, Mel wastes no time in finding a new partner in professional dancer Mark Ballas from "Dancing with the Stars." On the day of the competition, however, Mel's new found dancing confidence leads to her downfall - leaving Joe and Mark to clean up her mess.