65 billion years ago, a spaceship piloted by Mills (Adam Driver) crash-lands on Earth after crossing paths with an unexpected group of asteroids.  His cargo, twelve people in cryosleep, are all killed except one, a young girl named Koa (Ariana Greenblatt).  Mills needs to get both of them to the remaining escape pod before the asteroids hit.  Their journey is complicated by two problems.  First, the two speak different languages.  Mills’ home planet has managed to develop interplanetary space travel but not a universal translator.  Second, the environment is filled with Cretaceous period dinosaurs who want to eat them.  Over the next twenty-four hours, Mills and the only other remaining survivor Koa do their best to navigate all manner of dangerous beasties, big and small, in their desperate journey to their only means of escape before an extinction-level event happens.

One fine day, a young girl named Wen collects grasshoppers in a sun-dappled forest near a cabin in the woods.  She’s soon joined by Leonard (David Bautista), a hulk of a man with arms covered in tattoos.  Despite his threatening appearance, Leonard is a gentle giant who helps Wen with her task.  To her credit, Wen remains calm as Leonard’s enormous hands gently envelops a grasshopper.  When he casually states that he and his friends will soon meet Wen’s parents, she notices several people emerging from the trees holding scary weapons.  This finally triggers Wen’s “stranger danger” reflex and she runs to the cabin to alert her parents.