Fired, Maria finds aid, the girls recognize Alfonso's ring on Marcos' finger, and Elsa gives Héctor the silent treatment for deciding on his own to expel Iván.
Marcos improves his standing among Ivan's group when he discovers a secret passage which, lyin' beyond the wardrobe of the mysteriously absent Alfonso, opens into a new world of questions.
Carolina and friends break through the sealed door to find a maze of tunnels and a horrifying sight apparently awaiting them. Paula continues her friendship with the gnome.
An accident where a student gets hurt puts teacher Amelia's future at the school in question. Paula and Evelyn believe they've uncovered the identity of the Tooth Fairy.
The school board offers Héctor's job to Elsa but only if she'll expel the students who were found with ecstasy among their possessions. She asks for one concession - that one can stay. Héctor objects.
Jacinta returns, but everyone's general happiness remains short-lived under Elsa's rule, and Marcos discovers a worrisome numerical connection between the dead orphans and his sister.
Seeking to distance himself and Paula from the menacing school, Marcos readies to sign Héctor off as their guardian, but two investigations lead him to an impasse with no one to trust.
With police on hand to investigate the whereabouts of a missing person, existence of the gnome becomes public. Will the lesson of judging a book by its cover intercede before tragedy strikes?