Rat-a-Tat

Don gets kicked out of a bus next to a mountain, which happens to be Mt.Everest. He gets into his bag and wears his gear to make the climb to the top. As he watches the top he see's a man rolling down giving a try to climb the very same mountain. He then decides to quit. Then the mice brothers tease him calling him a loser and a quitter. He then make the climb. Compete with the mice and face obstacles like avalanche. Don makes it to the top and sets a board saying "First Dog to climb the Everest", he then helps the mice brothers make it to the top as well and changes the sign to "Dog and Mice" and they celebrate.