According to Cawthon's description of the game on Steam, Five Nights At Freddy's 2 casts players in much the same role they played in the first game, that of a night watchman at a Chuck E. Cheese-esque pizza parlor inhabited by animatronic birds, bears and other animals. As you've suspected since childhood, these robotic entities come to life at night and roam the hallways searching for blood. If they make their way into the security room, your hapless watchman will be brutally killed. The goal of the game, as its title suggests, is to survive five increasingly difficult nights trapped in the pizza parlor with your metallic stalkers.
Alongside the animatronics seen in the original Five Nights At Freddy's, the sequel adds "a new cast of characters," and grants players their own faux Freddy Fazbear head that, when worn, will fool the animatronics into thinking you're one of them. Five Nights At Freddy's 2 is currently available on PC at a price of $8.
[Image: Scott Cawthon]