Yoon-woo, an unemployed college graduate, lends his cell phone to a delivery man in the street. When the stranger gives him an energy drink in thanks, he is suspicious. Later, when his roommate Juho returns from an active business trip, he warns Yoon-woo that their fish dinner may be poisoned by fallout from the Fukushima disaster. Juho asks Yoon-woo to leave the apartment for the evening, which Yoon-woo spends isolated.