Hyeon Choong-yeol

An expelled boxing champion, who now is a high-school teacher, witnesses intolerable violence and throws her first punch to build justice against it, while putting on a mask.

When Navier, the flawless Empress, is blindsided by her husband's shocking demand for a divorce to marry his mistress, she refuses to back down. Instead, she unleashes her own power play, forging an alliance with a mysterious prince from the Western Kingdom. As she navigates a treacherous web of politics and romance, Navier will stop at nothing to reclaim her throne and outdo her ex-husband at every turn.

An arsonist is terrorizing Seoul and the fire investigators are hot on his trail.