When ex-military contractor John Knox receives a text from partner Grace Chu warning that she fears her cover may have been blown, he jumps into action. Knox must re-trace the well-hidden steps of a woman who had been attempting to determine how one million euros' worth of AIDS vaccine disappeared, all while eluding angry poachers on a parallel trail. The poaching of elephant ivory fuels constant blood and slaughter. The threat from al-Shabaab militants interferes with his pursuit of Grace and Knox is pitted against the most savage and suicidal fighters in the world. As Grace feels her civilized self slip away while abandoned in the bush, Knox races to find her.