Two adults and a juvenile break into a house occupied by a brother and sister and their stolen children. There, they must fight for their lives.

What started as a week-long adventure with friends quickly turns into a terrifying fight for survival in The Stairs. in 1997, a young boy is out hunting with his grandfather (Schneider), when he stumbles upon a mysterious staircase deep in the forest. The subsequent disappearance leaves locals baffled as to the fate of the wayward pair. Twenty years later, a group of hikers set off on an ambitious trail, deep into the same stretch of wilderness. With each step away from civilization they are pulled deeper into the treacherous trap of the mountain terrain where they stumble upon the same set of ominous stairs.