A survivor of the Great Siege of Rochester Castle fights to save his clan from from Celtic raiders. A sequel to the 2011 film, "Ironclad." It’s 1216, just one year after the battle at Rochester Castle, and a new enemy threatens English life that’s far more terrifying than King John - bands of Celtic raiders, stealing livestock and killing anyone who gets in their way. After the death of his father at the hands of these raiders, Hubert is determined to defeat them, once and for all. He seeks out his cousin Guy, one of the heroes of Rochester castle, for help. Guy is no longer the naïve idealist he once was, but a hardened sword-for-hire… Hubert finds him in a whorehouse, drunk and disillusioned, and only willing to raise his sword for money.