|“Primeval's Eye. My mother used to tell me about this place. It's an uncharted vast wilderness of death.”|
|— Lloyd to Harumi in "Dead Man's Squall"|
The Primeval's Eye is a location deep inside the jungle. Misako's friend, Dr. Yost went missing trying to map out the area. Not much is known about it except that it is the location of the Oni Mask of Hatred. It was home to a giant crustacean named Crabby before it was tamed by the ninja. A path in the Primeval's Eye called Strangler's Path is the path to the Oni Temple.
At some point in time, Dr. Yost ventured into Primeval's Eye, but he went missing and didn't return.
Lloyd and Harumi headed for the Oni Temple by riding a boat they found. During their journey, they encountered "Crabby" who harassed the two until they reached strong currents. Unable to control the boat, Lloyd and Harumi fall down a waterfall, but soon discovered the Oni Temple in their sights.
After Harumi obtained the Oni Mask of Hatred, she met with the rest of the S.O.G. but the Ninja were able to free themselves and they surround her gang. The two sides then stared each other down as Kai demanded where Lloyd was. Suddenly, they spot Lloyd being launched from the temple.
Without warning, "Crabby" returned and caused havoc on the Ninja and the S.O.G. While the Ninja were busy trying to defeat the creature, the S.O.G. made a quick getaway. Using Spinjitzu, Lloyd is able to reach the Bounty, but Killow grabs him. Meanwhile, "Crabby" broke himself free and stares at the Ninja.