鄧炳權（羅嘉良飾）本來係新界圍村村長，因一次捨身救人而成為城中英雄，更加獲得商界女強人方思晴（陳慧珊飾）嘅賞識，欽點佢演出旗下廣告。但思晴自信傲慢，同大男人嘅炳權出現唔少磨擦。之後兩人同時被伏擊受傷，炳權幸保性命，但思晴就香消玉殞。思晴死不瞑目，為咗追尋兇手，不惜借炳權身喬裝成海外歸僑司馬詠琴，並以一副女強人嘅姿態潛伏公司查明真相。期間，思晴發現自己嘅親妹方思虹（張燊悅飾）原來表面純真，其實古惑反叛。思晴為免思虹行差踏錯，要炳權追求佢，而思虹亦終接受咗炳權。呢個時候，思晴又發現丈夫張浩華（江華飾）同祕書蘇麗瑩（湯盈盈飾）嘅姦情，頓覺晴天霹靂！原來買兇殺她既人，竟是浩華......
Tang Ping-kuen (played by Law Ka-leung) was originally the mayor of a walled village in the New Territories, but he became a hero in the city because he sacrificed his life to save people, and was even more appreciated by the strong woman in the business world, Fong Sze Ching (played by Chan Wai Shan), who appointed him to perform in his advertisement. But Siqing is confident and arrogant, and there is a lot of friction with Bingquan, a big man. After that, the two were ambushed and injured at the same time, and Bingquan survived, but Siqing died. In order to pursue the murderer, Siqing did not hesitate to use Bingquan's body to disguise herself as Sima Yongqin, a returned overseas Chinese, and lurked in the company to find out the truth with the posture of a strong woman. During this period, Siqing found that her sister Fang Sihong (played by Zhang Shenyue) turned out to be innocent on the surface, but in fact, she was confused and rebellious. In order to prevent Sihong from going astray, Siqing made Bingquan pursue him, and Sihong finally accepted Bingquan. At this time, Siqing found out about the adultery between her husband Zhang Haohua (played by Jiang Hua) and her secretary Su Liying (played by Tang Yingying), and suddenly felt a thunderbolt on a sunny day......