Unsure of how to use the Eye of the Titans, Allora, Tanner, Dax, and Katie go in search of answers. The key to unlocking the orb's mysteries may lie in an ancient scroll that was lost at the end of the Titan Wars. Searching in the secret rebel base Shangri-La, Allora finds information that will lead them down a path of danger, and bring them face-to-face with one of the most dangerous of enemies. At the end of the Rebel Wars, a sleeper agent, code named Hades, wreaked havoc among the rebellion. The information he passed on to the King of Sonora led to the death of many high ranking agents in a secret organization called the Order. With his assassins dead, the King decides to activate Hades. The only way that Allora, and her friends, can expose the traitor is to find the one item that he covets most. Hades is after an ancient scroll from the lost city of Alexandria, which carries a key piece of information that could lead to the destruction of Earth. Allora will test her limits, face new enemies, and figure out that in the game of secrets, no one is safe.