An intergalactic fighting competition between champions of various worlds has traditionally been won by a species much larger and stronger than humans. Entering the contest, a human finds he has to battle against not just his opponents and his self-doubts, but the corrupt system. Far in the future, on a distant space station, the legendary Arena is where the best fighters from every planet come to vie for the championship. But for over half a century, no Earthling has been good enough to be a contender. Until out of nowhere, comes an underdog: the great human hope, Steve Armstrong... and the best anyone's ever seen. He's been training all his life for a shot at the big time, but now he's up against some mighty big muscle: a ruthless extra-terrestrial crimelord who'll pull no punches to make sure he stops Steve dead. In the mood for hard-hitting sci-fi action? Arena will knock you out!

《鬼气森森》讲述彗星谷的居民正在接管从种子已经生根有一个外来植物。警长调查奇怪的事情上，。
地质学家汤姆贝恩前往一个名为彗星谷的小镇，调查流星经常掉落于此的原因。抵达后，汤姆发现镇上的居民都有些怪怪的，彷佛藏有极大的机密。汤姆与居民达克及警长布瑞德合组了一个调查小组，决定发掘出事实的真相，
结果竟然是彗星带来了各种邪恶的种籽到地球来萌芽繁殖，它们会幻化成各种不同的人形，并冒充当地的居民，而世上所有的魔鬼，几乎都源出于此小镇，他们一批批的向全世界输出这些人形魔鬼……

马特（Michael Russo 饰）和茱蒂丝（特蕾希·斯科金斯 Tracy Scoggins 饰）是一对感情十分要好的情侣，同时，身为警察的两人在工作中也是默契十足的搭档。在一次办案的过程中，马特不幸殒命，茱蒂丝发誓要为自己的恋人报仇，于是一路追踪歹徒来到了一间仓库之中，哪知道在这里，茱蒂丝竟然遇见了恶灵，恶灵企图附在朱迪的身上转世为人。
就在朱蒂被恶灵围攻之时，仓库的保安出现，虽然救了茱蒂丝一名，但保安自己却牺牲了。就在茱蒂丝眼看着就要被恶灵附身的节骨眼上，天使出现了。