In 1968, Kanchanaburi — Yak, a soldier from the elite Black Panther unit, receives an urgent mission from Major Rit: to find Thap, an intelligence officer who has gone missing deep in the jungles of Khao Kwang. The area is infamous for the legend of “Ai Hong,” a shape-shifting tiger demon said to possess immortality. Yak and Sergeant Paphan lead a team of elite soldiers into the heart of the jungle to search for the missing officer — and to hunt down the man-eating creature. But as the line between man and monster begins to blur, they must fight to survive the horror of Ai Hong and protect Nampetch from its deadly fangs.

Mokasak, the godfather of the Baan Rai district, who had only enemy named Saming Baan Rai. Saming Baan Rai had a lot of land and be the great fighter. They felt antipathy to each others. By the way, Saming Baan Rai was falling in love with Mokasak's daughter. After Saming Baan Rai got new freinds to help him, they had to judge the tautness between them to clarify how they lived together in the district.