When Axel's dog, Grits, is left stranded after following two climbers up a mountain trail, danger is imminent as a lightning storm threatens. Kaboom! Can Axel, with the help of his dad, make the difficult climb up Cathedral Wall to rescue Grits before it's too late?

Wendell Minor's spectacular paintings capture the great outdoors of the Teton Mountains, while acclaimed children's book author Jean Craighead George tells the compelling story of one boy's mountain-climbing adventure.