Star experiences "mewberty", that is, her skin breaks out in hearts whenever she is near boys. Although Marco thinks it's much like the Earthling condition, Star's is more extreme. She sprouts hearts all over her body, and transforms into a butterfly creature that captures boys and seals them away. Marco turns to the Glossaryck, a genie inside Star's book of magic, for advice on how to stop her.

Ludo fires his minion Lobster Claws after he accidentally takes off Deer Beard's antler when trying to get Star's wand. Marco tries to help Lobster Claws become good while Star thinks he cannot be reformed.