Molly and Tooey are confused when Trini refuses to join the basketball team because of polar bears; Molly's trip north to surprise Nina for her birthday is jeopardized by a moose blocking the runway.

Molly, Grandpa, Dad and Tooey go on a snowmobile adventure to search for hot springs in the backwoods; Tooey's hero, dog musher Eugene Pike, re-creates a historic mail run across interior Alaska.