Cody, whose family was the protector of the very first Samurai Zord, the Bull Zord, unleashes it by unlocking an ancient seal; Jayden gets a power disk to tame the beast as it goes on a wild rampage and heads for the city.
Spike gets a job to help out his Uncle Bulk; the Rangers run into a Nighlok who can make mirror-like duplicate images of himself to confuse the Rangers.
The Rangers discover that Serrator's recent attacks have an ulterior motive - to crack open the earth and let the Sanzu flood it and thereby become ruler of both worlds.
When Serrator asks Deker to fulfill the final piece of his destructive plans, Antonio begs Deker to reconsider his role in the battle between humans and the Nighlok.
The Nighlok Fiera unleashes an overwhelming attack on the Red Ranger, but when he goes down another Red Ranger takes his place. Which one is the real Red Ranger? The answer will change the Samurai Rangers forever.
Master Xandred and Octoroo deploy a mind-bending Nighlok named Trickster, trapping the Power Rangers in a series of horror movies. The Rangers must figure out what is reality and what is illusion. Will the Rangers escape the nightmare?
