Tommy & Kim witness a transmission from the future, featuring Tommy, powerless during a major battle. This heralds the results of Zordon & Alpha's tests, which reveal that he only has enough Green Ranger energies for one last battle. Meanwhile, five grim bullies show up at Angel Grove High. They're polar opposites of our heroes, right down to matching colored clothing! Lord Zedd plans to forcibly make them his Dark Rangers. He has the five bullies captured, and sends the Turbanshell monster (a conkshell with worm creature) down to attack the Power Rangers. Tommy's dwindling Green Ranger powers are to be siphoned off by Zedd's Green Crystal, with which he will not only destroy the Command Center, but power his Dark Rangers!