Osomatsu v.s The Skinwalker

Osomatsu and his brothers all go camping in the woods. At first, everything's all fine and dandy. However, when night falls...They will soon realized they're being stalked by an dangerous creature well-known in Native American History. What happens when the creature pretends to be one of them? Who is really who? Who can either of them trust? Will any of the brothers even survive the night???