The local police prove unhelpful when a 500-pound dinosaur skull vanishes from a secret excavation on Sage's family's ranch, so Teddy and his friends conduct their own investigation.

The year is 1915 and the world is at war. Marta and her father are passengers on the Lusitania, desperately trying to get back home to Germany. While aboard, they must keep their identities hidden or risk being mistaken for enemy spies. Then the Lusitania is attacked by a German submarine. They just make it off the sinking ship, but her father is discovered and detained. Marta suddenly finds herself alone in enemy land. To survive, Marta must draw...