Time is running out for Dr. Minh Tran. Desperate to save her father, Linh plunges into Hanoi's lethal underworld, hunting a cure as ancient as it is forbidden.

Her search ensnares her in a bloody web of poachers, smugglers, and killers who traffic in extinction. As bodies pile up and evidence vanishes, a relentless inspector and a passionate conservationist close in from opposite sides.

Stalked by shadowy figures and haunted by impossible choices, Linh discovers a terrifying truth: saving her father may cost her soul—or both their lives.

In this high-stakes game where everyone is both hunter and hunted, survival demands crossing lines that can never be uncrossed.