Lin Wan, the "only son" of a general who grew up in the border gate, was granted a marriage by the emperor overnight and became the bride of Xie Wujiu, the sick and frail eldest son of the King of Zhenbei. In order to retain the family's military power, she could only grit her teeth and put on red makeup, playing the role of a arrogant and playboy concubine, thinking day and night how to be "abandoned" decently so that she could return to the battlefield. But how could that husband, who seemed to fall down at the slightest hint of wind, always be able to accurately grasp her seven inches? When the vest layers fell off, she realized that the sick prince was the one who had hidden it the most.