Escalofrío Diabólico plot
A modern Spanish family lives in a spacious castle. A son of the family wants to inherit the castle and keeps the rightful heir, his half-brother, captive in the dungeons. No one is looking for the young man, as he is believed to have died in a car accident. Nor is there anyone to protect the old, insane mother. The half-brother and son will be used as human sacrifices for the annual Satanic ritual held in the castle's subterranean dungeons. One day, the imprisoned half-brother's betrothed unexpectedly arrives and she begins to realize that something is wrong.