Yutaka just spent a good chunk of her summer in the countryside at her grandmother's house, and she's looking forward to meeting her friends again after a month away. Besides, Keiko is coming home from the city to visit. But it quickly becomes apparent that things won't go so smoothly. First Keiko gets sick, then the priest at the local shrine tells Yutaka that something evil is spreading across town. And when their mother finally returns, she seems to be acting kind of weird.

Well, never mind all that! Yutaka is a brave woman with energy to spare, and she'll take any problem in stride! Accompany her on her wacky adventures to save the town with the help of her sister Keiko!