How did Pug get to the camp in Downriver by Will Hobbs?

In "Downriver" by Will Hobbs, Pug gets to the camp as part of a group of troubled teens sent for a wilderness therapy program. He is accompanied by his friends, and together they embark on a white-water rafting adventure on the river. Pug's journey to the camp is not just physical; it also represents his personal growth and the challenges he faces throughout the story.