The music-filled Hamster & Gretel introduces Kevin and younger sister Gretel, who are about to be bestowed super powers by space aliens. But something goes awry, and it's Gretel and her pet hamster (named Hamster) who suddenly have new abilities. Now, protective older brother Kevin must figure out how to work with both Gretel and her pet Hamster to protect their city from mysterious dangers.
Gretel tries to hang with the cool kids and must protect them from a disgraced mascot.
Kevin and Anthony's desire to be on a prank show threatens their friendship.
Dave is mistaken for a secret agent while on a train ride with his family.
Fred takes over as president when Chad Goldenboy goes missing.
Hamster and Gretel battle lookalike robots that can predict their every move.
Kevin gets caught in an awkward love triangle with Hiromi and Lauren.
When Kevin is mistaken for a teen doctor, he has to go along with the ruse to stop a villain's evil plan.
Carolina and Gretel join a business that is not as innocent as it appears.
Nordle cheats in an orchid contest, leading to disastrous results.
Gretel and Bailey try to be on trend by wearing the latest headphones but get caught in a villain's trap.
Kevin's plan to teach Gretel not to rely on her powers is interrupted when he's taken captive by hill people.
Main Computer returns and strikes up a friendship with Kevin.
When a fishing competition is threatened, Gretel must win it to protect the other contestants.
Hamster and Churro switch bodies just as a bodybuilder villain attacks.
Kevin and Gretel's grandmas clash at Dave and Carolina's vow renewal while Clem Clam plots revenge.
Hiromi releases truth gas at an art show with her parents in attendance.
