While chasing after a robber, Hong Kong police officer [Wong Tai Mui/黃娣妹(Grace Chan/陳凱琳)] accidentally gets caught in a whirlpool and she is transported back in time to Qing Dynasty. Initially, she has a strong dislike when she meets with the great Hong Kong pirate [Cheung Po Tsai/張保仔(Tony Hung/洪永城)]. After working together, they eventually become an inseparable pair.
Meanwhile, the 11th prince of the Qing dynasty [Man Ho/旻皓(Ruco Chan/陳展鵬)] sends out imperial Chinese navy to capture Cheung Po Tsai. After numerous bloody battles, Wong Tai Mui is captured instead while protecting Cheung Po Tsai. Even though the 11th prince has an obnoxious personality, he eventually falls in love with her due to her modern intellect. He is willing to give up his chance to become the next emperor in order to be with her.
Eventually, Wong Tai Mui returns to modern time during a near death experience. But unfortunately she loses her memory during her time travel. To regain her precious memory back, she will have to find it in the modern time...