Jeonggoo receives a letter of which the sender is his older cousin brother Choonbae one day. It contains other letters that Choonbae sent to his friends who have been together in the past. He brings the letters to his brother´s past lover and co-workers, and finds out the secret of his insidious past. Teuri describes the event that took place in a factory of Cheonggyecheon 25 years ago in the form of a mystery thriller revealing its truth. Mourning those who have been unfairly victimized in the struggle against oppressors, Teuri is a new film made by director SON Inhan seven years after Bitch Heart Asshole (2013). [MOON Seok]