Roy and Viv turn the people of Earth into mindless dancers after wishing to write the catchiest song of all time as a way to save their parents' dance studio.

To prove Dimmsdale's nemesis Vicky is only mean because she's lonely, Viv wishes that Vicky would become best friends with the next person she sees...which is Viv. Roy then wishes HE were Vicky's best friend to prove Viv wrong.