Yutaka has spent most of the summer in the countryside at her grandmother's house, and she can't wait to meet her friends again after a month away. In addition, Keiko comes from the city to visit. But it quickly becomes clear that things will not go smoothly. First Keiko falls ill, then a priest from the local temple informs Yutaka that something evil is spreading through the town. And when their mother finally returns, she's acting kind of weird.
Well, don't mind her! Yutaka is a brave woman with plenty of energy, and she can handle any problem! Go with her on her strange adventures to save the town with the help of her sister Keiko!