Sin 5 Kon Gla Tha A-tham

Sin 5 Kon Gla Tha A-tham (Zeal 5: Brave Men Challenging Injustice)
The special operations unit "Zeal" is undergoing intense training to find the five most skilled and bravest individuals to be stationed in a secret government agency tasked with solving special cases.
Sin / Sintham (Kan Kantathavorn), Win / Mawin (Sun Prachakorn Piyasakulkaew), Wei / Wittaya (JJ Jakkrit Kanokpojananon), Nuer / Tisnuer (Film Phakawat Yuhang), and Dan / Dindan (Boss Putthipong Klamjeenphanuvong) are the top five candidates.
The young men pass the various testing stages with flying colors. However, while pouring all their physical and mental strength into overcoming the final test—underwater bomb disposal—Sin runs out of breath and loses consciousness underwater for a moment.
In that split second between life and death!! Sin feels as though his body is yanked into a terrifying place. It is Hell, a place he had always thought only existed in fairy tales meant to scare children. A massive Grim Reaper takes him to see wicked souls who frequently broke moral precepts (Sin) during their lifetimes. After death, they are condemned to hell to suffer agonizing punishments according to the sins they committed.