For several centuries an isolated mountain village in Mexico has held hidden an amazing secret, an immortal dog that performs miracles of healing. Recorded in ancient Spanish records, it is the dog of Christ, a mongrel stray dog that was present at the crucifixion and which was stabbed by the same spear that pierced the body of the Savior. When a tragedy reveals the dog's existence through a series of miracles accidentally caught on television, it upends the world, destabilizing governments and causing worldwide revolution.