Barcelona’s city beach is a vibrant party hotspot. Restaurateur Marc (Atheer Adel) is not only celebrating the spectacular opening of his beach club but also a special reunion. For the first time in years, his old group of friends is coming together: doctor Sofia (Edita Malovčić), IT specialist Sergi (Nico Rogner), school principal Alex (Christoph Gawenda), and photographer Bruno. Suddenly, the power goes out, and Sofia takes charge, just like in her legendary party days. But the carefree atmosphere vanishes in an instant when Bruno’s body is discovered. Detective Xavi Bonet (Clemens Schick), who had been enjoying the festivities, is suddenly thrown into investigator mode. Along with his colleague Fina Valent (Anne Schäfer), he soon realizes that this reunion wasn’t just about nostalgia. Soon, troubling secrets come to light—failed business ventures and a series of anonymous letters. When a second murder occurs, the investigators suspect that someone in the group is settling old scores.