(The official discussion for Characters Live but also a place for Megan and Naomi to share stuff privately).
There is a second layer to our universe. The universe of imagination. In it all things that are created by the imagination reside, including story characters.
Thanks to scientific experiments into the human psyche. The layer between the two universes are breached in two separate places. This means the raw matter of imagination and dream is raining down on our world, creating monstrosities that shouldn't exist.
Two amateur authors with the help of their characters must seal these breaches.