When young Ami-chan and her family moved to a new home, she didn’t know what to expect, but not even in her wildest dreams could she have expected the bizarreness that awaits her. Moving her things into her new room, Ami discovers a pretty little doorway leading into the floor. Surprisingly, three creatures greatly resembling stuffed animals jumped out to greet her! Iyo the bunny, Kenta the bear and Issa the panda claim to be the Happy Aniyoko Trio, and say they live beyond the door in another dimension called Animal Yokocho. From that day forward, the three frequent Ami-chan’s bedroom, bringing with them their annoying antics, strange fun and games, and of course... trouble!