As tradition dictates, Star receives the royal magic wand for her 14th birthday, but her parents worry that she is not ready for the responsibility and send her to a place they deem safe - Earth.

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.

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 takes the Diaz family out vacation to her home dimension of Mewni.

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

Ludo fires the lobster monster from his group and the creature doesn't know what to do, so Star and Marco try to help him out.

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

Star accidentally freezes time with her wand and then tries to convince Father Time to set things right.

Star must face her greatest fear and travel to St. Olga's Reform School for Wayward Princesses to bust out Flying Princess Pony Head for her birthday.

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

Star leads a class field trip to a museum in another dimension and puts the entire class in danger.

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