When Lunella finds a nasty comment on her Moon Girl social media page, her fixation on the troll threatens to take over her life.

When Devil Dinosaur gets jealous of sharing Lunella with her class hamster and accidentally sets the animal free, he must search New York City to bring the furry friend home.

Lunella tries to overcome her awkwardness about fitting in at a slumber party by creating a mind-reading device but accidentally switches brains with Devil Dinosaur.

When Lunella runs the rink for a night, she agrees to Casey's get-rich-quick scheme, which threatens Moon Girl’s reputation and her family's beloved business.

When Lunella loses a game of chess against a supercomputer, her obsession with winning drives the frustrated computer to program every device in the school to attack her.

When Lunella seemingly gets hurt and is stuck in bed, Casey must step in as Moon Girl for the day.

When Lunella creates a chemical to change her hair, she accidentally turns her mane into a vengeful villain that vows to ruin her.

Moon Girl fights to save the LES from changing.

Feeling insecure about his size, Devil convinces Lunella to create a potion to make him temporarily small.

When brilliant, altruistic Lunella Lafayette accidentally brings a dinosaur to the Lower East Side, she finally has the brawn to match her brains and protect her community.

Lunella must confront her childhood fear, the Coney Island Funhouse, to save Mimi from The Beyonder.

Lunella creates a device that allows her to fast forward through mundane chores and tasks, but she struggles to handle the unexpected side effects.

Hoping to help Casey have an epic bat mitzvah, Lunella makes an appearance as Moon Girl, which ultimately brings out the worst in Casey and causes a rift in their friendship.

When Devil Dinosaur eats a dangerous Moon Girl gadget, Lunella and Casey must shrink themselves to retrieve it.

The Beyonder gloms onto Lunella to learn about humanity, just as she's struggling to win a big science competition.

When The Beyonder gives an arcade machine the ability to grant wishes, Lunella is pumped to use it.

When Pops' rivalry with former best friend and skate partner Vernell threatens to ruin Roller Jam, Lunella meddles in their beef to squash it.

When being around the brilliant Hot Tomatoes leaves Pops feeling insecure, he dabbles in an elixir that makes him smart.

Moon Girl’s rivalry with a new teenage super-foe, Kid Kree, threatens her budding friendship with his human alter ego, Marvin.

When Lunella and Devil Dinosaur spend the weekend apart after a disagreement, Devil Dino gets mixed up with a rag-tag group of ex-Super Hero sidekicks.

When Pops fosters a mysterious stray dog and enters him into a dog show, a paranoid Lunella is convinced the creature is an evil alien who intends to sabotage the event.

Lunella is desperate to find a date to the school dance, but when she gets Kid Kree to be her escort, she learns that peer pressure can harm the relationships that matter most.

Devil Dinosaur gets two birthday parties.

Moon Girl gets into the children's party business.

Lunella uncovers the history of the Original Moon Girl as she struggles to thwart a powerful villain's plan to use her portal for evil.