So Close is a 2002 Hong Kong action film directed by Corey Yuen and starring Shu Qi, Zhao Wei and Karen Mok.

Lynn and her sister Sue are computer hackers, assassins and espionage specialists who use their late father's secret satellite technology to gain an advantage over their rivals and law enforcement agents.

At the beginning of the film, they infiltrate a high security building and assassinate Chow Lui, the chairman of a top company in China.

After their successful mission, a police inspector named Kong Yat-hung is assigned to investigate the case and she manages to track down the assassins.

Sue has always been playing the role of the assistant by staying on the computer and helping to disable the security systems and giving instructions on navigating the area, while Lynn, who is older and more experienced, does all the field work.