All of the Ham-Ham's special items have suddenly gone missing! Luckily, Hamtaro is on the case and wants to know what's going on and who really had an intent on stealing everyone's things.

When Laura is asked to perform the role of Cinderella in the school play, the nervous actress accidentally leaves one glass slipper at home. When Hamtaro discovers the lost slipper, he and his Ham-Ham friends set out to secretly deliver the slipper to the theater.

Despite Boss, Howdy and Stan's stubbornness, the Ham-Hams decide to build a fun park under Panda's leadership. Meanwhile, Laura's family goes to the amusement park, but the car machinery breaks down.

During spring-cleaning at the Clubhouse, the Ham-Hams can’t wake up Snoozer, so they haul him outside on a table and leave him with the rest of the furniture. Then a remote-control car, powered by two boys, crashes into the desk and carries him away. In the meantime, Snoozer’s drowsy personality sparks some discussion among the Ham-Hams who realize that they don’t really know who their sleepy friend is.