静谧的夜空，一场流星雨划过了漆黑的银河系，留下了一道又一道美丽而耀眼的弧线。4个发着怪异、炽热的光芒，有如扁豆状的物体混合在其中，不但闪闪发光，还发出了噼啪的燃烧着的响声hellip;hellip;突然之间，一股极具神秘色彩的强大力量迫使着流星雨改变了方向和轨道，直接飞向了一颗拥有着明亮的蔚蓝色的星球--地球。 　　在一幢位于密歇根州偏远的郊外的舒适的大房子里，斯图亚特middot;皮尔森(凯文middot;尼龙饰)和他的妻子尼娜(吉莉安middot;维格曼饰)特意带着他们的几个小孩过来避暑度假--包括只有7岁、可爱且招人喜欢的汉娜(阿什莉middot;博伊彻饰)；15岁的汤姆(卡特middot;詹金斯饰)，一个疯狂的迷恋现代科技的古怪少年；还有最大的姐姐贝瑟妮(阿什丽middot;提斯代尔饰)，她和男朋友里基middot;迪尔曼(罗伯特middot;霍夫曼饰)偷偷跑出去旅游，刚刚回来。 　　在汤姆的号召下，皮尔森一家人一起来到了那幢位于比较荒凉的中心地带的三层度假屋，加入他们行列的还有孩子们的叔叔内特(安迪middot;里查克饰)和他的儿子杰克(奥斯汀middot;罗伯特middot;巴特勒饰)、亲爱的老奶奶娜娜middot;罗斯(多莉丝middot;罗伯茨饰)、一对12岁的双胞胎阿特(亨利middot;扬饰)和李(里根middot;扬饰)hellip;hellip;然后，是贝瑟妮的恋人里基，他尾随其后，突然造访。 　　随着天色渐渐地暗了下来，黑暗压抑的乌云盘旋在老房子的上空，突然之间，4个燃烧着的发光体射向了屋顶，里面的4个外星生物则迅速地离开现场，他们分别是冷酷、坚韧的指挥官斯凯普，一个天生的领袖；泰瑟，一身肌肉的大块头；瑞瑟，心肠狠毒的外星女战士；斯帕克斯，一个性情古怪、拥有4只胳膊的技师，也是其中最不具备威胁性的一个。 　　以斯凯普为首的4个外星人的目的是侵略地球，他们带来的最为高科技的武器是一个思维控制装置，可以强行将指令注入人类的大脑，然后让他们变成任人摆布的傀儡木偶hellip;hellip;第一个受到控制的就是里基，虽然他的言行和平时并没有太大的差别，却还是引起了汤姆和杰克的怀疑。 　　很快，皮尔森家的5个孩子就意识到他们即将面对的是人类最大的危机，同时，他们也察觉出来，那个所谓的思维控制仪，似乎只对成年人有效--这也给予了他们一个机会，那就是为自己的家园与侵略者们背水一战。为了保护那些易受影响的成年人的安全，他们只好将外星生物存在的事情隐瞒起来，然后释放了最极致的想象力，创造出了一些暂时能够凑合使用的应对武器，比如说土豆枪hellip;hellip;在天性善良、弃暗投明的斯帕克斯的帮助下，几个孩子发誓要彻底地毁掉外星人入侵地球的狼子野心。 The quiet night sky, a meteor shower across the dark galaxy, leaving behind a beautiful and dazzling arc. Four with strange, hot light, such as lenticular bodies mixed in which not only shining, also sent a crackling of burning noise hellip; hellip; all of a sudden, a shares very mysterious power of forcing a meteor shower changed the direction and the track, flew directly to a star has a bright azure blue planet, earth. Middot;; my sister Bethany; middot; Boyiche (; in a building located at the Michigan remote outskirts of comfortable house, Stuart middot; Pearson (Kevin middot; nylon ornaments) and his wife Nina (Gillian middot wegmann act the role ofing especially with their children over summer vacation -- including only seven years old, cute and cuddly Hannah Ashley middot ornaments), 15 year old Tom (Carter Jenkins decoration), a crazy infatuated with modern science and technology of the strange boy; and the largest (Ashley middot Tisdale decorated), she and her boyfriend Ricky middot Dillman (Robert Hoffman. Act the role ofing) secretly run out of tourism, just come back. In Tom's call, Pearson and his family came to the house located at relatively desolate in the centre of the three layers of vacation homes, to join their ranks and the children's uncle Nate (Andy middot; decorative Lichake) and his son Jack (Austin middot; Robert middot; Butler), dear old grandmother Nana middot; middot (Doris Ross Roberts ornaments), a 12-year-old twins Art (Henry middot; Yang ornaments) and Li (Reagan middot; Yang decoration) hellip; hellip; then, is Bethany lover Ricky, he followed him, made a surprise visit to. As the weather gradually dark down, dark and oppressive cloud hovering over the old house, all of a sudden, four burning luminous body shot into the roof, inside the four alien is quickly left the scene, they are cold, tough commander skepp, a natural leader; Taser, bulky body muscle; racer, cruel hearted alien woman warrior; sparks, a jerk, have four arms of technicians, which is one of the most do not have the threat of a. Esther Kemp led four aliens to invade the earth, they bring the most high-tech weapons is a mind control device, can force the instruction infused into the human brain, and then let them become manipulated puppets of the hellip; hellip; first to the controlled the is Ricky, although his words and deeds, and usually does not too big difference, was still aroused suspicion of Tom and Jack. Soon, Pearson's five children realized that they are going to face the biggest crisis of human. At the same time, they also perceived, the so-called thinking control instrument, seem to only effective in adults -- it gives them a chance to, that is to their homes with the invaders backs against the wall. In order to protect the vulnerable to the safety of the adults were influenced and they had to in the existence of extraterrestrial life things hidden, then released on the ultimate imagination, create some temporarily to improvise to use the weapon against, for example, a potato gun hellip; hellip; with the help of good nature, qiantouming sparks, several children swear to destroy completely alien invasion of earth's ambition.