Hamtaro gets left behind on his owner's birthday, so he does what any sensible hamster would: he ventures into a magical world to find the one thing that might make her remember he exists. The magic sunflower seed isn't just a MacGuffin, it's a kid's answer to feeling invisible at home. Watching a tiny hamster prove his worth against a demon boss because he loves someone who forgot about him is the exact kind of pure-hearted adventure that sticks with you long after the credits roll.

On Laura's birthday, Laura has little time for Hamtaro. He then heads off with the Ham-Hams to Ham Ham Land, where he searches for a magic sunflower seed. Winning it will not be easy, because Hamtaro must face Maou-hamu in battle to claim the seed. The film is a comedic fantasy adventure starring Hamtaro and his Ham-Ham friends.