A Chinatown shopkeeper reports, anonymously, colleague Zen Mai is being assaulted by armed triad thugs. It's the work of extortionist Wei Chua's abusive Dragons. Gregory is pleasantly surprised with a visit from his son Dean, who is outgrowing his divorced mother's insistence to avoid his workaholic father. Zen's daughter Ruby is missing after a shootout, but her boyfriend Dixon Green tips the team she's key to a risky attempt to 'fight back'. Zen's tragic past, losing Ruby's mother in a fire, proves crucial, as well as her kid brother.
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[On rooftop with suicidal subject
I just lost my father Zen. We didn't always see eye to eye, but I'd give anything to have him back in my life. Your daughter loves you, let her help you.
She can't help me.