The Queen Mother of Huatian Kingdom is sick because of missing her daughter. King Canghai (played by Louis Koo) urgently summons Princess Yizhu (played by Angelababy) to return to the country to celebrate. Princess Yizhu went to the Central Plains to study for many years and secretly married the Central Plains flower-protecting general Mai Bingrong (played by Zheng Zhongji). On the way the general escorted the princess back to the country, he rescued the drowning woman Huang Ying (played by Xiong Dailin) from the sea. Later, the group was robbed by the "Somali" pirates, and the princess fell into the water and disappeared in the melee. The bankrupt tycoon Huang Baiwan (played by Huang Baiming) had no choice but to let the amnesiac Princess Yizhu, who was fished out of the water, pretend to be his daughter Huang Ying and seek refuge with the in-law Wu Shangshu who was arranged to marry her. Unexpectedly, she was made difficult by the snobbish sister Wu Wenrou (played by Sandra Ng). The group entangled in the Shangshu Mansion and laughed a lot. At this time, Huang Ying was sent to the palace and was named a princess, while Princess Yizhu, who was dressed as a man, was selected by King Canghai to participate in the martial arts competition to recruit a husband. Princess Yizhu, who disguises herself as a man, the flower-protecting general Mai Bingrong, and the minister's son Wu Shangjin (played by Pan Yueming), who falls in love with Huang Ying at first sight, all three of them have gone through many tests, but under the judgment of the "martial arts fanatic" King Canghai, Yizhu, who is weak and helpless, wins. Whether lovers can finally get married and whether the real princess can return to her throne smoothly, everything will be revealed in the joyous scene.