Native 4k content of movie Prince of Darkness 1987. A group of researchers, while studying an abandoned church, finds an unusual vessel. With the help of X-rays, they manage to determine that the vessel is about 7 million years old and, most interestingly, it can only be opened from the inside. There is some incomprehensible substance in it: liquid diamond, created by some mysterious force.

An ancient manuscript states that Satan himself or his spirit rests in this diamond. As a result of experiments, the devil's power, freed from the vessel and scattered in space, begins to settle in researchers, turning them into slaves of Satan.