A Camping Spree with Mr. Magee

Mr. Magee and his trusty dog, Dee, are enjoying a peaceful camping trop when along comes a lumbering, marshmallow-loving bear and the excitement begins. The next thing the two heroes know, they are plunging down a mountain, racing down a river and teetering on the edge of a huge waterfall! 

How will Mr. Magee and Dee find their way out of this slippery situation?