In ancient Egypt, an evil sorcerer named Scarab kills the pharaoh's son, Prince Rapses, to become immortal. Entombed alive for his crime (Rapses' body was also never found), Scarab revives in the modern world and begins his search for Rapses' reincarnation, a San Francisco-dwelling boy named Presley Carnovan, to retrieve the spirit of Rapses so he can become immortal. Rapses' (Presley's) bodyguards, Ja-Kal, Rath, Armon, and Nefer-Tina, along with Rapses' cat, Kahti, awake from the dead to protect him from Scarab. They use the power of Ra to transform into powerful guardians.
They are able to call upon it for magical armor and powers to fight superhuman evildoers. Although, once their strength is exhausted, they must rest in their sarcophagi to regain the ability. In order to access these powers, the mummies call out the phrase "With the Strength of Ra!", which triggers their transformation.
