瑞科（卡斯帕•凡•迪恩 Casper Van Dien 饰）高中毕业后不顾父亲反对加入了机械化步兵学院，女友卡门（丹妮丝•理查兹 Denise Richards 饰）也加入了海军学院。在他们入学训练不久地球就收到了外星生物攻击，大量人类被残忍杀害，瑞科的亲人也被残忍屠戮。从此人类不再彼此杀戮，他们有了共同的外星敌人。悲愤交加的瑞科代领属下成立银河战队，投入对抗昆虫的战争，在一个山谷里面，当成千上万的巨型昆虫向他们袭击的时候，现有的武器是在不值一提，于是因为低估了对方的实力损失惨重，十万军队只有瑞科、卡门和几个人侥幸生存下来。瑞科渐渐意识到了这些外星生物的真实实力不容小觑，瑞科知道只有制造出更加现金的无期才能对付这些外星生物，开始展开人类的全面反击。

Riko (Casper Van Dien Casper Van Dien) joined the Mechanized Infantry Academy after graduating from high school despite his father's opposition. Denise Richards) also joined the Naval Academy. Not long after they entered the training, the earth was attacked by alien creatures. A large number of human beings were brutally killed, and Rico's relatives were also brutally slaughtered. Since then, human beings no longer kill each other, they have a common alien enemy. Ricko, who was full of grief and indignation, led his subordinates to set up the Galaxy Squadron, and went into the war against insects. In a valley, when thousands of giant insects attacked them, the existing weapons were not worth mentioning. The strength of the opponent suffered heavy losses, and only Riko, Carmen and a few people survived the 100,000-strong army. Riko gradually realized that the real power of these alien creatures should not be underestimated, Riko knew that only by creating more powerful weapons to deal with these alien creatures, began to launch a full-scale human counterattack