Percy Jackson Crossover/Fanfic THE TRIALS
Merlin, a powerful sorcerer, is in trouble. He has lost the only way to enter the planet he created. His arch-nemesis, known as KK, is trying to find a way in to take over. Will Merlin be able to find the key before his enemy does? Merlin finds a group of young people he thinks can defeat the Trials he created to prot...