Maimaimai Goen

Yu Okada, a new nursery school teacher, is wrapping up a field trip to Sanrio Puroland when everything goes sideways. Vision distorts. The group wanders into Yuropia, a deserted amusement park that occupies the same space as the one they were just in. A creature called Froggy Egg informs them that the only way back to their actual world is to challenge the park's attractions and collect ten medals. The park intends to make this difficult.