First this story started out with a girl creating her monster. It all went wrong ending up with she and her friends turning into monsters and having an epic battle engaged with the monster. In the second part the three female beasts have to scare a typical family in one night. The find out the parents are easy to scare but the kids seem to be amused by the horror. In the end the family and the monsters are heart and souls forever. Then In the third book the kids in the family try to make male versions of our little monsters. Later on the monsters have to do something to defeat them. In the fourth book The monster/girls collided with a secret government agent. It's a little similar to Charlie's Angels. And the stories continue on and on.