Would it be ungenerous to say this is the kind of movie Pixar doesn't seem to want to make any more? Probably. But I'll add another data point when Finding Dory shows up this week.
The opening scene is chilling as a young woman on a flimsy boat battles a raging storm and is washed up, barely alive, on a beach. A cry from a nearby pile of flotsam (or is it jetsam) reveals… Kubo! A baby down to one eye. It's clear that they've just barely escaped a perilous situation.
Skip forward a few years. Kubo and his mother live in a hidden cave above a small town of friendly folk. Mom is near-catatonic, and Kubo makes ends meet by showing off his magical origami talents to throngs in the town's marketplace. But (of course) one night he disobeys Mom's strict rule to get back to the cave before nightfall. And (of course) disaster strikes.
This sets Kubo off on a mission of revenge. He's accompanied by a monkey, mystically generated from an old talisman. And (eventually) a samurai warrior created from a beetle. Perils abound and (slight spoiler) there's eventual victory, but it's bittersweet at best.
Highly recommended. I know it sounds grim from my description, but there's a lot of funny stuff along the way too. Best movie I've seen so far this year. (Heh.)