What if you could sell your emotions for quick cash? Min-su, a broke part-time worker in Seoul, stumbles upon a strange wooden door at Euljiro 2-ga Station. A simple offer hangs above it: "Pass through the door - Earn 150,000 won." Desperation wins. But what lies beyond is not just money-it's a hidden market where human emotions are extracted, refined, and sold to beings who have lost their own. Every transaction strips away a piece of him: colors fade, feelings dull, and his very existence begins to blur. As Min-su sinks deeper into this seductive yet predatory economy, he must confront an impossible question: How much of yourself are you willing to sell before there's nothing left? A dystopian psychological thriller exploring capitalism, identity, and the price of human emotion.