Chaos follows the crew as they cross the San Francisco Bay to investigate the deceptively named Angel Island; the guys face residual anger emanating from a demonic darkness.
A mysterious shadow figure gets too close for Ronny and Mireya's comfort; Russell tracks a large creature along a well-used game trail but quickly realizes he's being stalked in return; Bryce makes an unsettling discovery at the bottom of a lake.
The team ascends massive pine trees in search of evidence from above; Bryce uncovers government secrets that may include underground bunkers; a 3D image specialist discovers possible man-made structures deep in the forest.
The team uncovers a potential Bigfoot kill zone directly above Lake Fear; thrilled by their findings, they launch a squadron of patrol drones to sweep the area.
At their new base camp in California, the team records a howl unlike anything they've heard before; Bryce learns of a potential Bigfoot cover-up by the U.S. government; Russell, Ronny, and Mireya come face-to-face with danger while on a night hunt.
Russell finds fresh clues along an abandoned railroad track, while Ronny and Mireya experience a hotbed of unexplained sounds deep in the forest; Bryce learns new information about the history of Bigfoot in Northern California.
Russell uses an unlikely ally to pursue a strange predator, while Bryce investigates the team's recent run-ins with mysterious floating orbs; after an invasion of their base camp, Ronny and Mireya use modern means to track a creature in the woods.
Using new tracking technology, Russell gets closer to his quarry than ever before; Bryce learns that Bigfoot may have psychic powers, leading Ronny to use an unusual technique to draw one out; Mireya is startled by strange lights in the night.
Visibly shaken Ronny and Mireya want answers about the unexplained activity they encountered the night before, while Bryce is baffled by some lights on the security camera; the expedition takes a turn when a team member goes missing.
The team pulls out all the stops to corner Bigfoot; Mireya travels on horseback to find evidence; Ronny recruits a psychic specialist to hone in on the creature; Russell catches sight of what could be real proof of Bigfoot.
When Russell films a shocking piece of video evidence, the whole team assembles to follow the trail; after a grueling journey through treacherous terrain, their search culminates in a monumental discovery.
Mysterious hovering lights haunt a couple along the highway; an explorer investigates Minnesota's most haunted cemetery; a disembodied voice gives a young boy the shock of his life.