A new evil rises named Diabolico and soon Captain Mitchell, a head of an Aquabase known as Lightspeed, contacted four different people who he been watching through-out years before the possibility of Diabolico's return. He gives these people whose names are, Carter, a firefighter, Chad, a sea-world performer, Joel, an aerial stuntman, and Kelsey, an athletic young lady, and also his daughter Dana, who works as a Parametric, some morphers to fight off Diabolico and his army of Demons, and all five became the new "Lightspeed Rangers".