A sorcerer (or alchemist) studies the occult with his father to the hatred of the locals, but once the young prince goes missing and they're accused of being to blame the king kills the sorcerer's father and the survivor casts a curse against the lineage of that king so none would live longer than that murderous tyrant. Many generations later the curse stands strong and every prince and king dies mysteriously before this certain age, but the last king, obsessed with escaping this curse, finally finds the Sorcerer hidden bellow his own castle and both men die, carrying with them the century-long curse.
A sorcerer (or alchemist) studies the occult with his father to the hatred of the locals, but once the young prince goes missing and they're accused of being to blame the king kills the sorcerer's father and the survivor casts a curse against the lineage of that king so none would live longer than that murderous tyrant. Many generations later the curse stands strong and every prince and king dies mysteriously before this certain age, but the last king, obsessed with escaping this curse, finally finds the Sorcerer hidden bellow his own castle and both men die, carrying with them the century-long curse.