Mork accompanies Mindy to her high school reunion and gets upset when Mindy associates with an old boyfriend. Mork then attempts to go back in time to the prom and do away with the boyfriend.
Mork turns to Exidor for money advice, but then invests all the family's money in Exidor's boutique.
Mearth learns to walk and talk, but calls Mindy 'shoe'. Mindy starts avoiding Mearth until Mork gives her an opportunity to bond with her son.
Howard secures a gig for Richie, Potsie, Ralph, and Bag to play at the Leopard Lodge dance. Fonzie is able to get the guys tuxedos, but, in return, he joins them as a member of the band. When Fonzie plays a loud bongo solo during a slow dance, Richie is chosen to give him the news that he's out of the band.
Mork becomes insecure when he thinks he doesn't have Mearth's respect. Mearth finds Mork's spacesuit and Mork wears it as a superhero costume. Mork and Mearth go to a bar, looking for some bad guys and they find more than they bargained for.
Oscar enlists a joke writer to help him trade barbs with Howard Cosell.