An American remake of the Polish supernatural slasher film "W lesie dziś nie zaśnie nikt".
A group of teenagers attending an internet/computer/smartphone free camp get lost in the forest with their counselor while on a multi-day hike. As if that's not bad enough, they get targeted by two brothers who were mutated into deformed, super strong cannibals by a mysterious material they encountered as children.
Don't mention the terrible letdown of a sequel.
