A grotesquely burned corpse found in a city park is a troubling mystery for Beijing detective Li Yan. Li, devoted to his career as a means of restoring the respect his family lost during the Cultural Revolution, needs outside help if he is to break the case.
The unidentified cadaver in turn provides a welcome distraction for forensic pathologist Margaret Campbell. Campbell, married to her work and having left America and her broken past behind, throws herself in to the investigation, and before long, uncovers a bizarre anomaly.
An unlikely partnership develops between Li and Campbell as they follow the resulting lead. A fiery and volatile chemistry ignites: exposing not only their individual demons, but an even greater evil - a conspiracy that threatens their lives, as well as those of millions of others.