An Ex Marine returns home to his pregnant wife a broken man. Suffering from PTSD, she battles to console him as he struggles to keep it together, slipping further into a paranoid delusion. When he is offered another tour of duty, she pleads for him to stay. Their home is invaded by a group of sick and twisted psychopaths who terrorize them both, but that's not the only thing invading... An unidentified species is also in the house, descending upon them with a fury of unimaginable horrors.

Some say Bigfoot is just a hoax but when a group of hikers go deep into the woods after being warned by a guide that has encountered a Sasquatch, they decide to ignore him and go off trail, but the deeper the go into the woods they realize that they are not alone. Becoming hysterical as night falls, the group is terrorized to their core and accidentally shoots and wounds a Sasquatch. Legend says the Bigfoot species simply want to be left alone but when provoked, they will protect their territory and in this case the damage has been done and there is no turning back.

An AWOL soldier with PTSD goes into hiding. Along with his brother and a few friends they retreat into a rural farm area unaware that the outside world has stopped functioning. On their way back to civilization, his brother is attacked and bitten by an infected farmer. The brother quickly turns into a rabid animal and lives for exactly three hours. Realizing that they are in grave danger, they head back to the forest trying to outlive the legions of the infected.