This movie begins within the world of a TV show--it's really the world of "Barney the Dinosaur." But Barney is now Buddy, and he is a unicorn. I love when several people are forced together on a campus--and "BarneyLand" is a campus I have not seen in a movie before. The children mostly get along; there is also a talking backpack, which might be a reference to "Dora the Explorer." A nurse and mailman are on the periphery. Buddy the unicorn demands that everyone learn to dance. When one little boy refuses, Buddy commits murder, then covers up the corpse. The story begins to feel like a comment on Harvey Weinstein. Buddy repeatedly says, "I am the one with the power, and you will believe each of my statements." One suspicious child begins to doubt his own suspicions--the world works in a certain way, and if there is evidence to the contrary, the evidence must be wrong. We then make a jump to the real world, the actual world. Cristin Milioti is...