An illegal immigrant from Mainland China sneaks into the corrupt British-colonized Hong Kong in 1963, transforming himself into a ruthless drug lord.

Mr. and Mrs. To are wealthy, creative jewel thieves who divorce for no apparent reason after a successful diamond heist. A year later, she’s engaged to the son of a rich woman who begrudgingly lets her son give his fiancée a family heirloom after she signs a pre-nup.