So they power the city by scaring children…not what we would see as a sweet film. Mike and Sully find a human in the monster world and discover that they are not as dangerous as made out to be. They look after Boo until they are able to send her home through her door. After her door is shredded and the monsters are banished, Sully misses boo and goes looking for her. During all the disaster, laughing is found to be more powerful than screams and Mike and Sully take over!