When four estranged brothers return home to say their last goodbye to their dying mother, Grace, hidden motivations reveal themselves. The family's already tenuous bonds are tested when secrets from Grace's past resurface, causing a restless night to go terribly awry as the brothers are thrust into a fight for their own survival.

Arthur Brennan treks into Aokigahara, known as The Sea of Trees, a mysterious dense forest at the base of Japan's Mount Fuji where people go to commit suicide. On his journey to the suicide forest, he encounters Takumi Nakamura, a Japanese man who has lost his way after attempting suicide. The two men begin a journey of reflection and survival, which affirms Arthur's will to live and reconnects him to his love for his wife.

In the fall of 1976, a small psychology lab in Pennsylvania became the unwitting home to the only government-confirmed case of possession. The U.S. military assumed control of the lab under orders of national security and, soon after, implemented measures aimed at weaponizing the entity. The details of the inexplicable events that occurred are being made public after remaining classified for nearly forty years.

After a party, David Hargrove gives a ride home to his colleagues Emily Brandt and Corey Thompson. Corey decides to have dinner and they go to an isolated ATM. Soon they are threatened by an unknown man and they become trapped in the ATM trying to survive.