Jack and Sky must stop a meteor hurtling toward Earth that was launched by Prof. Cerebros, who is actually a criminal named Kraw. Meanwhile, Kraw's ally Broodwing unleashes a Dragoul monster to distract the Rangers.
Doggie's dismissed from his duties at the request of the visiting Cdr. Fowler Birdy (Paul Norell) because of how he handled the Troobian situation. Surprisingly, it is Gruumm who convinces Doggie to fight to get his job back.
An alien working for Gruumm is on a mission to obtain an immensely powerful stone that has the potential to turn Earth into space dust; the Rangers seem to take Shadow Ranger for granted, relying on him to fight their battles.
The rivalry between Sky and Jack intensifies with the unexpected and mysterious arrival of Sky's old buddy Dru Harrington (Dwayne Cameron) to the S.P.D. Academy. Meanwhile, Cdr. Cruger becomes a target for assassination.