The Rangers need Dr. Akana's help to thwart the Void Knight's evil scheme - but Ollie disagrees with Zayto's plan for fear of putting his mother in danger.
A familiar face arrives on Earth and Zayto dismisses his quest as a distraction; after he saves the Rangers from a powerful Sporix Beast, Zayto realizes an important lesson.
Seeking new Zords, Zayto is trapped on a distant planet and Aiyon makes a risky trip to save him; together they must confront the nightmares of their past before the Zords can be found.