Laura, in 5th grade, has a very special little pet named Hamtaro. He is a golden hamster with an insatiable curiosity and he longs to be Laura’s secret assistant, leading him to live thousands of adventures every day that he shares with other hamsters that are as much fun as he is.
Laura’s family moves to a new city, where she makes friends with Carla. They have something in common, they both have hamsters. On her first day of school, she meets other classmates. Hamtaro also meets other pets like Pepper, Boss, and Pashmina, adding members to their group to form the Ham-Ham Club.