When a mysterious monster rises from the Mekong River and attacks Bueng Kan, it cuts people off from the outside world. Officials and people in the area, including Chinese scientists who accidentally came to conduct research in Thailand, all forces must be mobilized to catch this crazy monster before it's too late.
Treachery centers on a man who is reunited with his estranged son at a remote wedding party. When a storm strands the party, ugly truths are revealed.
