Elmo imagines himself as a mountain climber and (though initially making a molehill instead of a mountain) plans on climbing Mount BiggestEverest, the biggest mountain in the world. Mr. Mole and some mountain goats warn him about the yeti, but Elmo doesn't believe in it. He then imagines up a sheep sherpa, who leads him up the very squarey trail that'll take him to the top. On the way, they encounter a yak, who cannot let them pass unless they mimic his yodels. As they climb some more, they hear some yeti growls and Sheepa makes a run for it, causing Elmo to slide down and dangle from the cliff. He is saved by the yeti, who introduces herself as Nettie the Yeti. She leads him to the top, where they perform the "BiggestEverest Finale."
