Dan, a photography student who is given an SLR camera to use for his thesis by his professor Aim. However, Dan finds out that it actually is a test of the devil, which he has no way to escape. His only choice is to obey it or fight back.。人类创造了一种被叫做drone的机器人,它们没有感情,没有恐惧,也感受不到痛苦,人类用它来保护自己,以维持永久的和平,没想到结果却被它们反过来摧毁的所剩无几。幸存的人们必须想尽办法打败drone,重新夺回对这个世界的控制权。。While shooting a documentary on the suspicious disappearances within the homeless community, a filmmaker and his crew go missing while uncovering a terrifying and vicious secret below the city's surface.。