As the pet of Haruna Lu (voiced by Haruna Ikezawa), Hamtaro (voiced by Kurumi Mamiya) is a golden rat with a cute appearance and a simple heart full of curiosity. This time, Hamtaro follows his master to a new city, which is undoubtedly the beginning of a great adventure for Hamtaro.　　In his new home, Hamtaro made many interesting friends. Lili from France (voiced by Murai every morning) seems to have a loving affection for Hamtaro; The wild general (Kentaro Ito) always plays the role of leader; The greedy and cute Dodo (Hanako in Love voice) is still holding its sunflower seeds. More and more friends have joined the Hamtaro family, and the Hamhar Tree they have established has become a base for everyone to gather. With the company of these friends, Hamtaro's happy life begins.