Apollo 18

In December, 1974, the Department of Defense contacts the crew of the previously-cancelled Apollo 18 mission to inform them that the mission is a go, though it has been deemed top secret. Commander Nathan Walker, Lieutenant Colonel John Grey and Captain Benjamin Anderson are launched towards theMoon,ostensibly to collect moon rocks, but their given mission is to place detectors to alert the United States of any impending attackswhile Walker and Anderson land on the moon in the lunar module Liberty. While planting one of the detectors, the pairtake samples of strange rocks. While attempting to sleep, the pair hear noises outside and a camera captures a small rock moving nearby. Houston claims the noises are interferencedetectors. Anderson finds a rock sample on the floor of Liberty despite having secured the samples. During furtherexploration they discover footprints that lead them tonearby,finding it functional but blood stained. Anderson follows tracks leading into a dark crater and finds a deadWalker queries Houston about the Soviet presence but is rebuffed, told only to continue with the mission.The following day the pair find the flag they had planted missing. Their mission complete, the crew prepares to leave the Moon but the launch is aborted whenLiberty suffers violent shaking. An inspection reveals extensive damage to Liberty and inhuman tracks which Walker cites as evidence of extraterrestrial life. Walker feels something moving inside his spacesuit and helmet and is horrified as a spider-like creature crawls across the inside of his helmet. Walker disappears from view and Anderson finds him unconscious outside of Liberty. Walker later denies the events. A wound is discovered on Walker's chest; aresulting surgery finds a piece of the Moon rock embedded within. The pair find themselves unable to contact Houstonunknown reasons.Anderson speculates that the true intentionwarning devices is to attract the aliens. Walker shows signs of developing infection as his woundgrows and discolors, and he becomes increasingly paranoid. The mission cameras capture the rock samples moving around the interior of Liberty, revealingthe aliens to be the rocks themselves. Increasingly delusional, Walker attempts to destroy the cameras within Liberty but accidentally damages the systemcontrols, causing Liberty to depressurize. Realizing the Soviet, the pair travel to the their Along theway, Walker attempts to run away, believing he should not leave the Moon and risk spreading the infection to Earth. Anderson crashes as he attempts to stop Walker.