New students start school at Las Encinas as Guzm?n continues to mourn his sister and Christian struggles with his secret. A classmate goes missing.

Seeking the truth about Marina's passing, Samuel attempts to seduce Carla. Lu's new friend, social media guru Cayetana, hosts an impromptu party.

Polo and Ander have a heart-to-heart. Nadia gets creative to stop Guzm?n from drinking too much and doing drugs. Rebeca's mother offers Samuel a job.

Pressured by his friends, Polo's guilt overwhelms him. Cayetana's mother threatens to reveal her secret. Ander and Guzm?n argue with their partners.

Rebeca teases Cayetana with what she's learned. The Halloween party takes a troubling turn. Samuel walks in on a shocking scene.

Lu blackmails Nadia, and Samuel confronts Carla with his suspicions. In the future, Guzm?n is interrogated about the missing student.

Lu uncovers a secret while helping Cayetana with her fundraiser party. Omar worries about Samuel's fate. Ander's behavior confuses Guzm?n.

Painful truths and dark secrets are exposed as the students unburden themselves and the circumstances behind Samuel's disappearance are revealed.