Abel, a brilliant architect crippled by agoraphobia, has spent three years isolated in a mountain home, unable to set foot outside. Faced with losing both a crucial professional opportunity and his ex-partner, he turns in desperation to an unlikely savior: José, a celebrated dog trainer who claims his canine techniques can rewire the human brain.

But what begins as unorthodox therapy soon descends into psychological torture, as José’s methods grow increasingly sadistic. A chilling home-invasion thriller in which the healer becomes the predator, El Instinto (The Instinct) pushes man’s struggle against fear into a harrowing fight for survival.