Monsters, Inc. 4K 2001

The slimy bugger in the cistern, the furry beast like the monster from "The Scarlet Flower", the giant mochi under the bed - they are all real. All they need is to scare children, because from children's screams they get electricity.
Full-length cartoon tells about the crises in the world of monsters, their lives. But one day the whole peaceful life of monsters is threatened: in their world gets a child. And with children so much trouble that they can bring even monsters.