宫内须栗带着爱犬鲁邦从熊本来到东京生活。一天，须栗和鲁运邦一起散步时，它突然狂奔了起来，须栗追过去一看，发现鲁邦正趴在一条拉普拉多犬身上，一旁呆 立着狗的主人饭田哲平。

Miyauchi Suguri, who moved from Kumamoto to Tokyo with her dog, starts working at a pet shop due to a strange turn of events. The "dog maniac" Suguri who even grabs dog poop without hesitation creates great commotion together with her carefree colleagues and customers each with a past.