| Director | Tony Giglio |
|---|---|
| Genre | action film, horror film, science fiction film |
| Country | United States |
On a United Aerospace Corporation (UAC) base on Phobos, Dr. Betruger prepares to teleport a volunteer from a UAC lab in Nevada to Phobos by using ancient teleporters known as "Gates". The experiment proves successful, but the subject emerges partially deformed and insane. On a UAC transport vessel, a group of marines on a mission to guard the Phobos base awaken from cryosleep. Amongst them is Joan Dark, a disgraced lieutenant the other marines are reluctant to work with. Joining them is Bennett Stone, a scientist, and ex-boyfriend of Joan. Against Dr. Kahn's wishes, Betruger prepares to teleport himself to the Nevada base. After preparations by medic Veronica, Betruger passes through the Gate. However, the Phobos base suddenly goes offline as monsters emerge from the Gate.
Unable to communicate with or enter the base, the Marines receive orders to investigate and restore power. They enter via the emergency entrance and Bennett discovers that the reserve power has been drained to two percent, granting them 90 minutes before the fusion reactor goes critical and explodes. The marines are then attacked by UAC staff who have been turned into zombie-like creatures. During the attack, the marines find three survivors: Betruger, Veronica, and the base's Chaplain, Glover. Betruger reveals that the UAC has been studying the Gates for 30 years in order to colonize planets. It is believed that the Gates were left by an ancient alien race while Glover believes them to be demons. Against Betruger's wishes, Joan orders the remaining marines and survivors to evacuate the base.
Upon returning to the transport, the crew is attacked by Imp-like demons, killing several marines, including Glover. With the transport disabled, Joan agrees to Betruger's plan to restore power to use the Gate to teleport the survivors to the Nevada base. Soon, she reveals to Bennett that her agreement was a ruse to restore communications. As Bennett restores the base's power, Betruger reveals that Joan was disgraced for allowing a terrorist to go free due to poor judgment. Betruger then kills Veronica and seals the marines in the power server, who are then attacked by Imps. With only Joan and Bennett left standing, they plan to stop Betruger from activating the Gate.
After Joan acquires the BFG 9000, Bennett is attacked by an Imp. As Joan shoots her way to the Gate chamber, she is attacked by a zombified Bennett, forcing her to kill him. Joan then shoots Betruger, who resurrects immediately and pushes Joan into the Gate. Joan is teleported to hell, where she encounters a horde of Imps and Stanga, their overlord. Stanga reveals that they plan to destroy the universe and annihilate all life on it. Joan shoots him and blasts the horde with plasma grenades as she makes her way back to the Gate. She is then teleported to the Nevada base and demands that the Gate be shut down. She is apprehended and sedated by security. Before she loses consciousness, the Gate begins to reactivate. Dr. Kahn believes it to be Betruger coming through. As the film cuts to black, a growl is heard.