Coming across a stray dog, Yoshiko, whose home doesn't allow pets, asks Riko to look after it. Despite Riko's fear of dogs, both she and Yoshiko grow attached to the dog, but inevitably have to return it to its rightful owner. Unwilling to accept the circumstances, Yoshiko stakes out the owner's house in the hopes of seeing the dog, with Riko deciding to accompany her. After getting to see the dog, Yoshiko accepts that it belongs with its owner while Riko manages to bridge the gap between her and Chika's dog Shiitake.