Ronny, Mireya and Bryce search for a top-secret government research facility hidden beneath the forest, and a witness comes forward with his up-close encounter with Bigfoot. Meanwhile, Russell is unnerved by a gruesome discovery.

The team has a truly shocking sighting, only to see their best lead yet lead slip through their fingers. But a groundbreaking tip leads Bryce to wrap up their expedition in Washington State and relocate to a new Bigfoot hot spot.