Book excerpt: Come along for legendary action with the first twelve books in the Heroes in Training series, now available in a collectible boxed set! The terrible Titans are merciless giants who rule the earth and are led by Cronus, the biggest, baddest Titan of them all. Cronus and his cronies have put the world into chaos—but the Titans’ rule is about to be challenged by a group of young Olympians, led by ten-year-old Zeus, as they discover their powers and try to claim their rightful place as rulers in various realms of the universe. This boxed set includes Zeus and the Thunderbolt of Doom, Poseidon and the Sea of Fury, Hades and the Helm of Darkness, Hyperion and the Great Balls of Fire, Typhon and the Winds of Destruction, Apollo and the Battle of the Birds, Ares and the Spear of Fear, Cronus and the Threads of Dread, Crius and the Night of Fright, Hephaestus and the Island of Terror, Uranus and the Bubbles of Trouble, and Perseus and the Monstrous Medusa.