story starts with a empress(mc) and emperor from being Childhood friends to being married to each other due to political reasons ... The empress is always busy with work and duties so she is not able to always provide adequate love to her husband .The husband instead brings a slave concubine(villaines) to quench his thirst for love .Thus the emperor and concubine grow closer and she tries to distance the empress from emperor which she succeeds in,this agitates the empress and mc starts feeling bad and mistreated meanwhile she ends up making friends with prince of another country who later falls in love with her(can turn into a small bird). As this continues the concubine gets pregnant with the child of emperor(which is actually not emperor's child but her ex lover's lol ikr) and this greatly hurts mc so she does not treat the concubine nicely and her relationship with emperor detiorates as the emperor says the mc is infertile .later on The prince who fell in love becomes king so he ask mc to become his queen and marry him, the mc accepts because the emperor greatly neglects her and early on planned on divorcing her after getting divorced she immediatly marries the male lead. later emperor regrets because he thought after him divorcing her she would still stay with him bcz she was his childhood friend.He tries to meet mc after she gets remarried but she tells him its the his fault for not being loyal to her and insulting her and then on mc lives a happy life with the king (new husband) and births 2 children while at the end of story concubine dies to some disease (till then she raises her child with emperor) while the emperor always regrets divorcing the mc also forgot to add the concubine becomes empress after divorce the end (they all live a peacefull live till end of story just the concubine dies before the end) .