Have you ever wondered what it would be like to be a secret? To be hidden away, where no one knows who you are? Not the battles you fought, for sake of others each and every single day? To be considered nothing more than a myth to be thought of in passing? After being discovered by Killia with a head injury, warrior Samuel willingly follows Killia into the Rebel army and acts as his right-hand man in the war against the Lost Army. With his amnesia, he has no stakes in this war, so fights for Killia and the others. But he does have some memories, memories that centre on rare and long-forgotten myths and legends. Who exactly is Samuel? Or; A bunch of skits of Killia and Samuel growing closer before Samuel's past comes back to haunt him.