When I.S. 833 gets an impressive science teacher, Lunella is so eager to impress her that her drive toward perfectionism starts doing more harm than good.
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.
After Lunella tells her family that she's Moon Girl, she must convince them she will be safe, which seems impossible when Molecule Man shows up for revenge.