Donovan McGinnis, a veterinarian and conservationist at a research center in Sumatra, is fighting to save the rainforest from poachers and politicians alike. One day he discovers a tigress trapped by a snare, and while treating her injuries, she bites him. He becomes ill with strange symptoms that leave him feverish and dreaming of the jungle and blood.
Kersen and his family are part of the Siluman harimau, a clan of tiger shifters hidden away in a secret village near the rainforest. When Kersen’s sister is caught, he knows he must free her before she infects someone with their magic and reveals their secret.
But Donovan has already been turned, and only time will tell if he can control the tiger within. Kersen must help him, but will the fierce attraction between the pair bring ruin to them all? With the rainforest under threat from outside forces, they may be doomed anyway, unless Kersen and Donovan can find a way to defeat the danger from inside and out.