Plenty of legends surround the infamous Boulder House in Whispering Bluffs, Wisconsin, but nobody takes them seriously. Certainly nobody believes that the original owner, Maxwell Cartwright Jr., cursed its construction-or that a murder of crows died upon its completion, their carcasses turning the land black. If anyone did believe it all, there's no way River Red High would offer a field trip there for the senior class. Five very different seniors on the trip-Violet, Paul, Ashley, Dylan, and Gretchen-have reasons beyond school spirit for not ditching the trip. When they're separated from the group, they discover that what lies within Boulder House is far more horrifying than any local folklore. To survive, they'll have to band together in ways they never could have imagined and ultimately confront the truths of their darkest selves.