The teens experience an "empty-chair exercise," in which they address feelings to a chair that represents painful memories. Elsewhere, fights break out and the kids wonder whether they'll be home for the holidays.
Lexie is scared to rappel down a cliff; Lauren deals with her emotions on the anniversary of her father's death; and Little Bear helps Nick make a fire.
After a 10-mile hike carrying 40-lb backpacks, the youths celebrate Thanksgiving without their families.