The students enter their last semester at Las Encinas. In a flash-forward plot, the students are interviewed about Polos death during their graduation party. Polo and Cayetana are left as outcasts by their peers, with the exception of Valerio. Samuel and Guzman continue their plot to bring justice for Polos crimes. Lu and Nadia compete for a scholarship to Columbia University, leading the two to form a mutual friendship. Ander is diagnosed with leukaemia and begins chemotherapy, causing friction between him and his loved ones. On the night of their graduation, in a drunken stupor, Lu accidentally stabs Polo, who stumbles and falls to his death. Samuel, Guzm?n, Ander, Omar, Nadia, Carla, Valerio, Rebeka and Cayetana agree to cover up the murder. Unable to find a suspect, Polos death is eventually ruled as a suicide and his parents tell the police he confessed to Marinas murder. Two months later, Samuel, Guzman, Ander and Rebeka return to repeat their final year with Omar, who has enrolled as a full-time student.