Holy Knight Katrina has been breaking the code for many years now. She has been running with Meliodas, captain of the Seven Deadly Sins, since she was a child. Many of her fellow Holy Knights have outcast-ed her, seeing that she is associated with the "enemy". But she has promised the sins to stick by their side, no matter what the cost is. This decision could make her pay dearly, but she will happily go down for the people she loves.