Book Two of The Dreamers.
There is one ray of hope shining through the darkness: the four children called the Dreamers. They alone hold the power to change the course of history ... and stop the Vlagh in its quest for total world domination.
The God Dahlaine brought the Dreamers into the world of the Elder Gods and now he wishes he'd thought harder about the consequences. He'd had no idea they would be so powerful. It seems there is no limit to the havoc they can wreak. It's bad enough with them dreaming the future - at least it's a future - but on top of that, what if someone else is actually controlling their dreams?