Sebastian the dog and his detective master search for Big Foot and other suspects when a guest is attacked by something "big and hairy" at the Sasquatch Inn.
Abducted by a "fan" and forced to become a member of a professional junior hockey team, thirteen-year-old star center Steve Crandall quickly realizes that he must play not only to win but to survive.
In solving the mystery of two medallions missing from an inherited curio collection, the Hardys wind up in a desolate area of Guatemala at the mercy of dangerous thugs.
Their efforts to recover a stolen ancient chess piece lead the Hardy brothers to Hong Kong where they help smash an international criminal organization.