故事讲述了街舞爱好者卢克（瑞克?马拉姆布瑞）、娜塔莉和纽约舞蹈大学新生摩斯结成一队参加地下比舞大赛。和前几集不同，这次影片采用了3D立体电影形式，可以让观众有身临其境的感觉。

本片描述了几个六岁左右的孩子的暑假憧憬，而守护着他们阳光般笑容的大人们实则每天在为生活拼搏。

年轻人依莱亚斯（皮奥·马麦 饰）因为盗窃罪被判罚为医院做两年紧急护士。在这期间他帮助了许多病患，还结识了美丽的女医生，这一段经历让依莱亚斯改过自新，对于生活有了新的寄托。今天是服务令的最后一天，再过几个小时，他就可以重获自由了，但这个原本应该很美丽的晚上充满了各种意外。依莱亚斯像往常一样在医院里忙碌着，一个严重受伤的病患被推进了急诊室，他竟然是依莱亚斯以前的盗窃同伙鲁迪（多米尼克·皮诺 饰），鲁迪的到来成为了这个灾难之夜的开始……

California, Mojave Desert, 1998. A strange glow appears in the sky. Sam, a forty-something door-to-door salesman, travels through the few inhabited zones of the Californian desert in search of clients, yet everything seems deserted. What's more, his wife won't answer his calls. It's as if everyone were avoiding him. When his car breaks down, Sam becomes a prisoner of the empty, hostile environment. Alone and without human contact for days on end, he listens continuously to a talk-show on the only local radio station. The host, a man named Eddy, takes calls from listeners who share their thoughts on a child killer at large in the area. At the same time, Sam starts getting psychologically harassed by strange threats he receives on his pager. Gradually, people begin to reappear and attempt to kill him. Sam has become a target and he must now defend himself. Little by little he loses it, caught up in a paranoid identity crisis. Is he truly the killer they're after, or is he being driven ...

2008，一只鹿猎人在阿拉巴马州，只找到了伍兹的东西，他的步枪，血和一个16”的足迹留下的脚印…五年后，他的儿子复仇。