Boss introduces Hamtaro and Oxnard to his friends, Pashmina, Penelope, Howdy and Dexter. When it's raining, a cat appears and attacks Penelope, but Hamtaro defeats the cat. Boss shows everybody his house, only to find a sleeping hamster named Snoozer. The hamsters decide to convert Boss' house to the Ham-Ham Clubhouse. Meanwhile, Laura goes to a new school. Her new teacher is Mr. Yoshi and her new classmates are Kana, Travis, Kylie and June, owners of Penelope and Pashmina.