Martinez suffers from a rare mental disorderproduct of a strong trauma at sea. A group of doctors try to find a cure for his illness.
The border between reality and fiction is increasingly ambiguous. The days pass and the patient travels deeper and deeper into the hells of his imaginary world.
Inside the box is the cure to his illness, but…what is inside the box? We all have a box in which we keep what we want to forget. Will Martínez dare to open his?