Granny has won an overnight trip to a hot spring, but is reluctant to leave Kuro alone. Hide agrees to watch Kuro and Poyo, so Moe and Granny can enjoy the trip.
クロの飼い主のおばあちゃんが福引で旅行を当て、萌と行くことに。ポヨとクロは英が面倒を見ることになったのだが・・・