Three British teenagers are dragged into another world to be warriors in its millennia long conflict with the dragons. A conflict which will spread to other worlds – including Earth.

Weird events have beset the Stevens Quadruplets since infancy.  But nothing can prepare them for the day they open their door and find another world outside.  A world inhabited by intelligent mythical creatures, most of whom are hostile to humanity. And it seems they are expected to save it from its ancient enemy – the dragons. Even with the help of their bonded ‘heart friends’ can they save both this strange, new world and Earth when the people they are trying to help want to kill them?