哨兵是由迈克尔·帕尔 杰森·R·摩尔 Ellie Patrikios Denitza Diakovska Neil Cole Paolo Mazzini John Stewart Arnold Ivan King 导演的一部科幻 影视作品,Years after an alien invasion almost extinguished human mankind, refugee on a secret base on the Moon, three heroes decide to jump into a time travel in the desperate attempt to save the survivors but they don't know that the Sentinel is waiting for them.