Watch Once a Thief
Mac Ramsey and Li Ann Tsei are criminals in the Hong Kong underworld who are separated after doing a big job for a client. After being separated for many years, Li Ann and Mac resurface in very different roles working for a very different kind of organization. Mac finds himself forcibly recruited to work for a Hong Kong crime fighting unit that goes after the very kinds of criminals Mac and Li Ann used to be. The situation gets complicated when Mac is put on a case with Li Ann, who had assumed that Mac was dead and has taken on a new fiancee.