Konatsu, a cheerful female student, fully enjoys her long-awaited school trip with her classmates, but ends up breaking an expensive-looking pot at the inn she's staying at. Tsubasa, a very scary female teacher, is ordered to sleep alone in a separate room as punishment. As the night approaches, a hand sneaks up from under the futon and fondles her boobs. When Konatsu woke up, what he saw was Tsuba, who was angry just a moment ago.