A case of the flu quickly morphs into a pandemic. As the death toll mounts and the living panic, the government plans extreme measures to contain it.

A homeroom teacher of Yosan Private High School has an accident, and thus a substitute comes to fill in. Han Bong-Gu is a mysterious man, and after strange occurrences the class president Ye-Rim tries to get to the bottom of this mystery.

The movie tells a story of whimsical and beautiful experiences that a woman goes through after she has changed an antique store into a café for her business.