From the World of Percy Jackson: The Wild Zone

AN ANCIENT CURSE. A DEADLY TRAP. A MONSTROUS SECRET. AND A FIGHT TO SURVIVE . . . Welcome to Camp Half-Blood! The legendary secret sanctuary where demigod kids - the children of Greek gods and mortals - can discover their true potential. Katie Kim may be a newcomer here, but even she knows they weren't supposed to be in the Wild Zone - the forbidden forest that's strictly off-limits to campers and staff. Why, then, did Clarisse, head counsellor of Katie's cabin, take her and four other newbies there in the dark of night and tell them to race back to camp by morning? Clarisse's challenge was scary enough, but when Katie's half-brother goes missing, his disappearance sparks the arrival of vicious monsters and a mysterious curse. It's up to Katie and the three remaining newbies - the 'Wild Omada' - to brave the Wild Zone again and uncover its dark and deadly secrets.