when the world's of kotlc, hp and pjo meet,there is bound to be trouble. so buckle your seat belts and get ready for adventure and humour. The Neverseen, death eaters and monsters have made an alliance and are stronger than ever. But so are our heroes,join Percy,Sophie , Harry and their friends on this quest to save the world. Again. What will happen when these worlds collide? Will new friends be made,or enemies, will it be a besties forever or a grudging alliance. Read to find out.