She is a despised brothel girl, but she longs for love and freedom; he is an upright general who is loyal to the country, but he is chivalrous and does not know what to choose; she is a cold and cold guard who is well-known, but loves to talk and laugh, just to protect; he is a dandy prince who is loved by all, but does not Love the imperial power, covet the true love; she is an ordinary informant, he is the leader of the informants; she is the naughty princess of Yan Kingdom, he is the gentle prince Lin'an; four different countries; four women with different backgrounds; four twists and turns of love; a heart-stirring event.