Star fails her first test, so she tries to play match maker for their classroom teacher to get a better grade. However, she winds up turning her into a troll.

While Marco is distracted by protecting his friend, the new school mascot, from being kidnapped by their football rivals, a confused Star believes this to be an upcoming battlefield and starts making plans of her own.

Marco breaks his arm before a Karate tournament. Star uses her wand to fix it, but accidentally gives him an evil sentient tentacle arm.

Star is feeling down when her crush Oskar has no calls from her, so Marco tries to cheer her up only that he accidentally summons Ludo and his army of monsters.

Star and Marco must go to "Quest Buy", a maze-like store to find a charger for Star's wand.

Star goes through mewberty, which covers her body in purple hearts and sets her off onto all the boys in school.

Star accepts her ex-boyfriend Tom's invitation to Demon Prom, but Marco is suspicious of Tom's intentions.

Star leads a battle reenactment as part of a Mewni Independence Day celebration with her friends on Earth.

When Marco is captured by Toffee and held for wand-ransom, Star enters into an unlikely alliance with Ludo and Buff Frog.

Star must learn how to free Marco from a magically locked closet without using her new wand.

When Ludo is thrown into nature, he must overcome the elements and creatures of the wilderness to survive.

A mysterious stray dog steals Star’s wand and refuses give it back.

Worried about his tadpoles' futures, Buff Frog investigates the hole in the Mewman force field.

Star and Marco face their final conflict.