The horror film [REC] — directed by Jaume Balagueró and Paco Plaza, and released in 2007 — was an unprecedented triumph for Spanish fantasy cinema. Fifteen years later, those responsible for the creation and worldwide success of this cinematic milestone decode its keys and resurrect the myth.

A teenager who went missing and was presumed dead returns home after eight years to find a family deeply affected by his disappearance. Gradually, doubts arise about whether he really is the missing boy or an impostor.