Convicted of murder and sent to a high-security prison for the criminally insane, XIII finds himself not only unable to continue searching for his past, but also at the mercy of his enemies. Unbeknownst to him, though, General Carrington and the beautiful but deadly Lieutenant Jones are still trying to unravel the mystery of the presidential assassination. All they have to do is find a way to help him before he loses his life - or his mind.