Time traveling series closely follows Hong Kong police officer Wong Tai Mui (Grace Chan), who gets thrown into a time portal when she comes across a waterspout while on duty. She travels back in time to early 1800’s Hong Kong and comes across Cheung Po Tsai (Tony Hung), a powerfulpirate controlling the South China Sea. The two strong personalities clashes, but after experiencing life and death together, Wong Tai Mui and Cheung Po Tsai begin to develop strong feelings for each other.
The proud and arrogant Prince Man Ho (Ruco Chan), the eleventh son of the Jaiqing Emperor, enters a war with the anti-Qing Cheung Po Tsai and his crew. After a bloody naval battle, Man Ho captures Wong Tai Mui as aprisoner. Captivated by Wong Tai Mui’s progressive wisdom, Man Ho slowly falls in love and reconsiders his ambition for the crown.
Wong Tai Mui comes across an opportunity to return to modern-day Hong Kong, but is hesitant, and she is unwilling to leave Man Ho and Cheung Po Tsai. In a bold step, she decides to return to the present, but in doing so, she loses her memory of the past.