Monsters Inc. is the heart of Monstropolis. It is she who supplies the world of monsters with energy - children's screams. The most formidable monsters, called bogeymen, go to the human world at night and extract screams there. The best corporate bogeyman is James P. Sullivan, or simply Sally. He is powerful and brave, but how could he be otherwise if every day he has to meet the most terrible creature in the world - a child. Sally lives a wonderful life until one day she accidentally lets a little girl into her world. But she is poisonous! How can Sally save herself, her reputation, and the whole of Monstropolis from this terrible creature? Although perhaps not so creepy...