Two twin brothers,both with dark secrets. Dogyeong Beak the oldest brother a killer gangster. A rich man with a company to uphold along with his perfect image. Isu Baek the youngest brother a military man and a secret killer. The both of them are a killer duo…until you came around. Now it was the killer trio, people would call all three of you The Dark Sabbath. Two young men and a young woman a group of cold stone killers…but not when y’all hang out. After a mission y’all were chilling