After failing a math test, Star tries to convince her teacher to change her grade. Star misunderstands when she hears that the school football team is going to "get slaughtered".
Monster Arm: Star accidentally turns Marco's arm into a monster arm when he has to do karate. The Other Exchange Student: Star is jealous when the family's best friend shows up.
Marco tries to cheer up Star and ends up summoning Ludo and an army of monsters! Star and Marco venture to Quest Buy to get a new wand charger before Star's wand dies...forever.
Star forgets to get the Diazes an anniversary present, so she invites them on a trip to Mewni. Star crashes a birthday party but has to fight off Ludo's monsters.
Star starts sprouting hearts all over her body, the telltale sign of "Mewberty." Marco and his friends travel to a dimension of pixies and are forced to work in the Shard Mines.
When Star attends Demon Prom with her ex-boyfriend, Marco follows to prevent Star from getting into trouble. Marco convinces Star that fortune cookies contain magical prophecies.
Star must travel to the Plains of Time to convince Father Time to get back on his time wheel. Star's dad unexpectedly shows up at the Diaz house looking for a place to crash.
Star leads a battle reenactment as part of a Mewni Independence Day celebration. Star sees a commercial for a "magical" Earth product and sets off on her own to buy it.
Star leads a class field trip to a museum in another dimension. Star uses magic to help Marco grow a beard, but messes up the spell and causes it to grow out of control.
When Marco gets kidnapped by Toffee and held as wand-ransom, Star enters into an unlikely alliance with Ludo: she'll help Ludo get his castle back, if he helps her save Marco.
