Phaya, Tharn, Yai, Khem, and Thongthai buckle down and commit themselves to passing the special forces exam after getting disciplined for their investigation into Lieutenant Tam's suicide.  

Phaya, Tharn, and Maris return to the crime scene to search for more evidence into the serial killer.  A conflict arises between Phaya and Tharn after a dinner with Chalothon.