While Wayne and Diane are out celebrating the anniversary of their first date, Amy's party is crashed by a group of aliens contacted by Nick using one of Wayne's communication gizmos. One of the aliens, through his bizzare home world customs, marries Amy after using a device to make the family some-what subserviant to her. Finding out their true origins, Amy demands her family be turned back to normal and their "marriage" be ended. Both are undone and he aliens part ways on good terms.

Wayne invents an invention called the 3iDer which turns people into different people. The invention and Wayne got nominated for the inventors recognition achievement award. An evil clown tries to steal the invention and frame Wayne so it is up to Team Szalinski to stop this clown and clear Wayne's name.

Wayne's comment at a seminar offends some witches. The witches cast spells on the family. Now they must stop the witches and get Nick back.