Laura is a lonely, 25-year-old freelance journalist from the provinces who lives a deeply isolated, monotonous existence inside her claustrophobic Mexico City apartment. Haunted by a dark past and tracking a specific, mysterious date on her wall calendar, Laura passes the time by engaging in detached, meaningless one-night stands with random men. Her routine is permanently disrupted when she meets Arturo, an enigmatic man with whom she shares an instant, volatile physical connection. Rather than a traditional romance, their relationship rapidly devolves into a fierce, highly explicit exploration of extreme consensual sadomasochism. Locked away from the outside world, Arturo acts as a dominant force, inflicting physical pain and humiliation that Laura actively craves. As the violence escalates toward the impending, fateful date on her calendar, their intense BDSM dynamic becomes a harrowing, psychological vehicle for Laura to confront profound grief and deep-seated emotional trauma.