Five brave, skilled, and adventurous young people are chosen to search for several magical jewels that were long ago taken from the Corona Aurora ("Crown of the Gods"), so as to prevent them from coming into the possession of Moltor and Flurious. They are brothers, banished long ago by the Corona's guardian for having attempted to steal it. When the millionaire explorer Andrew Hartford discovered Corona Aurora, they escaped their exile and rallied their allies. In response, Andrew Hartford selected the talented youths and modified their DNA so as to grant them exceptional physical powers by which to combat the evil. Although Moltor and Flurious initially attempted to work together, they soon became rivals. The Corona Aurora fell into Moltor's hands; yet without its jewels, it could not grant the owner universal power. Even more, the evil ninjas Kamdor and Miratrix joined the race for the jewels along with the Fearcats, Mig and Benglo. Now the Rangers, joined by a Mercurian named Tyzonn who joined their ranks as the Mercury Ranger, have to beat multiple villainous groups to save the jewels, and voyage across the world in search of their objective.