Sun-mi works at a reception desk of a public institution in Daegu, Korea. Nothing happens to her, and she has the same lunch every day. One day, a message is sent to her. This little incident in her ordinary life stimulates her curiosity. Saturday morning, a film director Ga-young participates into a Q&A section of her new movie entitled The Murder at Cinema. Eun-jung, a foreman in a production line, tries to find Min-cheol who disappeared with the book of accounts. She meets his acquaintances to ask where they saw him, and finally she hea...