After two years trapped in the dull rhythm of daily life, Heesu has grown numb—disconnected from herself and everything around her. But when she stumbles across a cryptic online ad offering a one-day BDSM roleplay experience, something stirs. Torn between fear and curiosity, she agrees to surrender control—if only for a day. What begins as a fleeting escape soon becomes a raw plunge into desire, power, and vulnerability. As boundaries blur, Heesu must confront not just the limits of pleasure, but the aching emptiness she's been running from.