Burke Martin and his cousin, Ellie, have discovered that they are the keys to solving a family curse fated to them 13 generations earlier. Their adventure in Thunder Moon has them knee deep in American history in Boston, Massachusetts. Unless they reunite the hidden Templar treasure their family will be attacked under the full moon's curse. But they aren't the only ones after the it. A secret society is trailing them, aware of the true power of the treasure. Can Ellie and Burke channel their powers under the full moon to find the real meaning of treasure and save their family?