Jack is a young teenage boy living a normal life on his home island of Barros. While growing up, he had heard many stories of the world surrounding his island home. He listened to tales about pirates who abducted children, ships that sailed The Demon Sea and beyond The Outer Void, and knights who fought for a thousand years in the Warriors' Pass.

All of these stories now become a reality to him, when suddenly, he and his sister are kidnapped along with other children from different islands. Jack and the other boys are brought to the island of Indo in order to be trained in combat and eventually be sent to The Great War. His sister, Jule, and the other girls who were kidnapped, are sent to an unknown destination.

Torn from their homes, Jack and the other kidnapped boys discover that they will be facing a life of servitude and fodder for the battlefield. While being trained on Indo Island to become soldiers, the boys unite with one common goal -- escape their island imprisonment and return home. For Jack, his goal also means finding his sister. He has no idea where she is, only frightening possibilities of what may have become of her.

Bri, the daughter of the Lord Master of Indo Island, also wants to leave the island because of the unimaginable future her father has planned for her. She discovers the boys' plan to leave the island. Bri must decide to join them or turn them in before they escape.