Taeyul, who moved to a quiet new neighborhood. In what seems to be an ordinary neighborhood with nothing special, he experiences some slightly strange things. A strange bus running without a driver, a noodle shop where food comes out without any sign of people, a sky whose light changes in sync with the flickering of streetlights... Whenever he is going through these strange events, the 'mister' suddenly appears, scolds Taeyul as if rebuking him, helps him, and then disappears without a trace. Who or whatcould this strange mister possibly be?