Hiking trip of no return

Tyson and Phoebe are going to spend the summer at Camp Wild. A new friend they made on the bus told them that Camp Wild was the best place to be for the summer. Though there were a few strange things that happened. The head counsellor manage to scare a bear while standing near it. If that wasn't scary enough. The counsellors show off animal like teeth, or they might make some wild animal sounds. If that wasn't crazy enough, the camp offers a hiking trip for the people at the camp. The people who return might become as eerie as the counsellors who are running the camp. What is going on at this camp? Could Tyson and Phoebe last the whole summer, or would the hiking trip turn them into monsters?