Set in 2007. Lycoris, a cold-blooded assassin raised in the underworld organization "Spider Web," is ordered to eliminate her acquaintance, a police officer named Lai. Instead, she defies the order, kills the client—Lai's superior, Lau Kin-ming—and goes on the run from the organization.
With Lai's help, she finds refuge with the triad syndicate "Red Flower Society." Arranged by their leader, Yang Kun, she flees to Thailand. But her past refuses to let her go.
Zhang Lei, the head of a rival syndicate who knows her tragic past. Wolf, her fellow assassin and soulmate who shares her darkness. And the relentless police force closing in on all of them.
Set across Thailand and Hong Kong, the blood-soaked fates of those living in the underworld intertwine. As an assassin who only knows how to kill, whose side will she choose to stand by at the end of her karma?
