Potential Plot Spoiler: Yoko is nearly a direct lift of Steven Spielberg's E.T. the Extra-Terrestrial plot line with a cute yeti from the Himalayas instead of a cute alien from another planet. The yeti, who ends up accidentally transported from its igloo home in the Himalayas to a temperate climate populated by humans, is seeking to get home, and is discovered by a preadolescent child. In the meantime, all the adults are either evil, trying to capture it, or they just don't understand and don't "get it" leaving the kids to their own devices. OK for a very young children's film, and by young I mean very young in the 5-7 or 8 range. It's quite sappy and highly predictable. Only 2 stars for incredible lack of originality with just enough difference to evade a Spielberg E.T. plagiarism lawsuit. If you've seen E.T. the Extra-Terrestrial, you've seen Yoko. If you haven't, see E.T. instead as it's a better executed timeless classic.
