Laura is a typical fifth-grade girl with a not-so-typical pet: Hamtaro! Quirky and curious, Hamtaro quickly makes friends with his fellow "neighbors" after the duo moves to a new town, and a lifetime of adventures begins. Whether it's attending sports festivals, visiting museums in the search for the world’s largest seed or playing matchmaker, the Ham-Ham Friends will stop at nothing to have a good time. When the humans stray, the hamsters come out to play!
Ash, Misty and Brock are taking a break from their pokemon-battling adventures to take a rest in the city, leaving their pokemon to run free for the day. Pikachu is quickly swept up in a game of cat and mouse with two local Pichu, leading him to the ultimate inner sanctuary: a tire-laden playground full of pokemon! However, a run-in with danger threatens the stability of the structure; can Pikachu, the Pichu and the rest of their new friends band together to save the day?
Hamtaro and Pikachu & Pichu share one thing: extremely cute little critters that get into all kinds of mischief. Hamtaro runs around with the Ham-Ham gang and the Pichu run around with other local Pokemon, having fun in every way they can.