In order to avenge her good friend, Zhu Qingxue, the sister of Zhu Binghai, the boss of the United States, gave up going to Vienna to study piano and started practicing martial arts. After returning to China from the United States, he found Zhao Tuozheng who killed his good friend. Ke was seriously injured and fainted on the street, but was rescued by bar singer Xu Minglei. The two gradually fell in love with each other while arguing, but every time they appeared in front of Zhu Qingxue's subordinates, Zhu Qingxue always called Xu Minglei his younger brother. Xu Minglei knew that his identity did not match Zhu Qingxue, so he quietly left her. A year later, Xu Minglei appeared as the boss of South Korea and snatched Zhu Qingxue back from Zhu Qingxue's fiancé Williams, becoming the boss of the United States and South Korea.