Nathaniel Coldhardt, criminal mastermind and leader of an elite group of teen thieves, desperately wants to get his hands on the lost sword of Cortes – which was used by the Spaniards to conquer and destroy the Aztec people. But not long after Coldhardt's motley crew returns from this new challenge empty-handed, one of them, Tye, is kidnapped from under their very noses. Jonah, Motti, Con, and Patch are desperate to find her, and they soon discover clues about a shadowy organization called the Sixth Sun that could hold the key to both Tye's whereabouts and the location of the sword. From secret headquarters in Europe to ancient jungles of Central America, Coldhardt's gang must make the most of their remarkable talents to decipher the connection between their friend and the Sixth Sun, before it's too late.