A group of strangers boards the Sunshine Express, an immersive role-playing train journey promising self-transformation and a mythical destination called Hermia. What begins as a playful game quickly turns unsettling as the crew imposes strict rules, demands emotional obedience, and blurs the line between performance and control. As the passengers question what is real, they become trapped in a psychological experiment that exposes how easily people surrender their freedom when offered purpose, belonging, or escape.