Wolf lives in a northern mining town where she spends her days exploring with her three best friends: Penny, Ann, and Brandi. The girls's treehouse hideaway, Birchwood, is Wolf's favourite place on earth. As summer arrives, Wolf and her friends find plastic orange bands wrapped around the trees near their cherished hangout spot, and their once stable friendship starts to unravel. Can the girls stay together long enough to save their special place?