Molly learns about her Grandpa Nat’s dream to climb to the top of Denali in honor of the first person to do so, real-life Alaska Native, Walter Harper.Molly tries to get Grandpa and her wilderness guide father to climb North America’s highest mountain.They agree, but tell Molly she’s too young to make the treacherous journey to the top.Molly enlists Tooey to join her in preparing to make the trip.