Jake and Peter, trying to deal with their own problems while on a mountainboarding trip, face even more trouble when the mountain on which they are riding begins to show signs of erupting.
Fifteen-year-old friends Jake and Peter take time from racing to investigate an underground maze of old mining tunnels and get drawn into riding and racing underground.
Peter and Jake are excited to be asked to help develop a mountain bike trail west of the Canadian Rockies, but it is not long before they discover something is not right.
Teen friends Peter, a freestyle fanatic who hates doing bike maintenance, and Jake, who dreams of being a motocross-race mechanic, secure jobs as junior guides at a Washington ranch for the summer,and learn to their dismay the dangers of being overly dependent on each other's skills.
Rivals and sometime friends Peter and Jake are forced to work together when they are called upon to confront dangerous rapids in order to find help for their whitewater-rafting companions who have become stranded in the wilderness.
Jake, Peter, and Moses, looking forward to heli-skiing and snowboarding in the backcountry near Whistler, spring into crisis mode when bad weather sets in, a helicopter crashes, and they must get everyone to safety.