A person who was originally innocent was involved in the whirlpool due to the conspiracy of her parents, and eventually became an orphan and made a living as a performer. But deep down in her heart, the childhood sweetheart, the person she longed for, why could she never get that person's heart? When he was originally desperate, he discovered a shocking secret. The emperor's favorite concubine Li actually had the same appearance as himself, and the person he loved deeply had an ongoing relationship with his twin sister because of a mistaken identity. After learning the truth, where should she go? Should she continue to promise to help him seize the throne and watch him fall in love with her sister? Or should she give up her promise and find another true love? The other one originally lived in seclusion and lived a happy life, but she learned the truth about her father's death on the eve of the wedding and embarked on the road of revenge. She only regarded the emperor as the person she hated most in her life, but was helplessly convinced by the emperor. Should she give up revenge and be willing to become an unknown concubine beside the emperor, or make up her mind to die together?