La caja 507

Modesto, an honest and hardworking man, runs a bank branch on the Costa del Sol. One day, robbers break into the bank, smash the safe deposit boxes and leave him trapped inside. Coincidentally, when looking at the contents of box 507, he discovers that the death of his daughter, which occurred a few years ago, was not accidental. The content of that box also depends on the life and safety of Rafael, a corrupt and unscrupulous ex-policeman, who will try to recover those documents at any cost.