The Yeti, sometimes known as Bigfoot or the Abominable Snowman and akin to Sasquatch, is a mythical, or, shall we say, so far unproven creature of enormous size, something like an ape. “Smallfoot” takes a charming switch-up — here it’s the Yeti who don’t believe there is such a thing as humans — and turns it into a surprisingly thoughtful film. In between its colorful musical numbers, silly jokes, and action scenes, somehow manages to address some pretty big and complex issues like fake news, xenophobia, and personal integrity, and to do so in a manner that is accessible and nuanced.

Our hero in this movie is Migo (voiced by Channing Tatum), who is perfectly happy and wants everything to stay exactly the same. His home is “harsh, jagged, freezing, and awesome.” “It’s a day like any other,” he sings, “and I don’t want to change a thing.”

We can understand why. The gorgeously imagined tundra of the Himalayas is wonderfully enticing here, with a color palette of blue and white with sparkling snow and Prussian shadows, and the community has an inviting design of homes made from stone and ice. It is a close and cooperative neighborhood, led by the Stonekeeper (Common), whose robes made of stone lay out the immutable laws. The gong must be rung each morning to raise the sun. The mammoths that hold up the mountain must be fed. And, very important, no one may question the laws or traditions. “If there’s a question causing you to go astray, just stuff it down inside.” As Migo’s father, Dorgle (Danny DeVito) says, “Do what you’re told. Blend in.”

Migo and Dorgle have the very important responsibility of ringing the morning gong. With Dorgle’s head (explaining why it is so flat and he is so short). Each day, Migo launches his father like an arrow through a sort of giant bow. He dreams of someday having the honor of getting launched at the gong himself. He finally gets his first try, but misses the target and ends up out in the snow, where he witnesses a plane crash and sees a human, what the Yeti call “Smallfoot.” The pilot sees Migo, too, and is equally surprised and a lot more scared.

No one believes Migo, and when he insists that he is not lying about what he saw, he is banished by the Stonekeeper. That is when he discovers a kind of Yeti Resistance movement, led by the Stonekeeper’s spirited daughter, Meechee (Zendaya). She believes in curiosity, exploration, challenging assumptions, and testing hypotheses: “Questions lead to knowledge, and knowledge is power.” Migo sets off to go beneath the clouds in search of Smallfoot.

Below the tree line, a British television personality named Percy (James Corden) is “under pressure” (he performs a Karaoke version of the song) because his once-popular television programs about animals have been eclipsed by amateur cute animal videos on YouTube and Facebook (the musical number features floating Facebook “likes”). He tells his colleague, Brenda (Yara Shahidi) that he plans to fake a Yeti sighting, and then go back to having integrity afterward. But then Migo, a real Yeti, shows up. Migo wants to take Percy back to his community to show that he was telling the truth. And Percy wants to film Migo so he can make a lot of money.

Amusingly, they have no way of understanding each other’s form of communication. We hear what each of them sounds like to the other, Percy’s little squeaks and Migo’s growls. Migo wraps Percy in a sleeping bag, wears him on his huge hairy chest like a Baby Bjorn, and begins to climb back up to the peak of the mountain.

This is where most movies for children start to move toward the themes of friendship, home, and believing in yourself. But “Smallfoot” goes in a different direction, somewhere between “The Matrix’s” blue pill/red pill choice between being safe and knowing the truth and “Black Panther’s” choice between isolationism and, despite the risks, finding a way to help and learn from others. Migo learns the reason for the Stonekeeper’s insistence on perpetuating the myths of the Yeti world, and he has to consider carefully whether it is worth putting his friends and family at risk in order to learn the truth.

This is some pretty existential stuff. “If I’m not the gong ringer, who am I?” Migo asks. It is heartening in this era of fake news, when it is tempting to outsource our knowledge base to our devices, to have a movie about curiosity, critical thinking, and challenging the status quo.

Parents should know that this movie has some schoolyard language, brief potty humor, action/cartoon-style peril (no one hurt), and discussions of past violence.

Family discussion: When did you find that curiosity led you to something you would never have expected? Why didn’t the Stonekeeper want anyone to know the truth? Who should decide what knowledge is available?

If you like this, try: “Cloudy With a Chance of Meatballs” and “Surf’s Up!”