Maise is stuck spending the summer after her first year of high school helping out at her family's hotel in a sleepy seaside town, but things become a little less sleepy once Ichiro, a mysterious young man, checks into the hotel. It seems as if only Maise and Ichiro can see the strange, sudden apparitions: the hotel lobby and the room transforming into an aquarium, a giant tree erupting from the floor or the rowdy monsters laying claim to the hotel restaurant. Maise vows to figure out not just what's causing these odd occurrences but why Ichiro has come to this remote town in the first place.