Su Lingyi, the legitimate daughter of a general's household, has a fiery personality and fears nothing, yet she and the cold-tempered Crown Prince Xie Huaijin are incompatible by birth. During an argument in the Imperial Study, she speaks in a fit of pique and boasts that she will marry into the East Palace, not expecting the Emperor to grant a marriage decree on the spot! To annul the marriage, the two join hands to devise various plans, only to find the wedding date drawing closer the more they fuss. Thinking it was an absurd marriage, little do they know that hidden conspiracies lurk within the East Palace and dangers surround the imperial court. Amidst their bickering, the two join forces to investigate corruption, smash plots, and expose inner ghosts, shattering the prince's power-seizing conspiracy. The bickering enemies who originally despised each other unexpectedly develop feelings for one another through repeated life-or-death protection. They talked about calling off the wedding, so how is it that in the end, neither can bear to let go of the other?