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.

Trini's excited to enter her giant cabbage into the Alaska State Fair, but a moose keeps nibbling at its leaves; Molly has to impress Aunt Merna if she wants to get her native name.

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.