After the successful invention of a time machine, El Santo and his friend, Dr. Sepulveda, must prove to their colleagues that the time machine really works in Treasure of Dracula. They will attempt this by searching for Dracula’s treasure. Dr. Sepulveda’s daughter Luisa, volunteers to step into the time machine and take a trip back to the 19th century. Luisa returns with two bite marks on her neck and under Dracula’s dangerous spell. Dracula is back with a vengeance! El Santo and friends must now match wits with Dracula and fight to the death.