Children's animated adventure featuring the voice talents of Channing Tatum, James Corden and Zendaya. Having searched the entire mountain to prove the existence of humans, who they call smallfoots, yeti Migo (Tatum) is shocked when he finally discovers a smallfoot on the side of his mountain. However, when he returns to his tribe to tell them of his encounter, Migo is banished for lying and sets out on a quest to prove that smallfoots really do exist, with the help of his friends and the Smallfoot Evidentiary Society. His adventure takes him below the clouds, to the base of the mountain, where he finds another smallfoot, named Percy Patterson (Corden), and takes him back home to clear his name.