In this society, it's lawful to kill and inflict pain on individuals. Sero, who works part-time at a company that specializes in torture, finds enjoyment in tormenting people alongside his senior colleague, Siu. As new employees join the team, including Mike and Hugh, their shared passion for inflicting pain continues unabated. Despite the stark contrast between the relaxed work environment and the brutal nature of their work, it's likely that many people will be drawn to this line of work due to its addictive nature.