Detective Woojin Seo lives in an era where machines can prosecute criminals. Faced with Woojin's murderous temper and obsession with bringing down the cartels, his supervisors place him under disciplinary probation and begin to rely on the machines to enact justice. But he's given an opportunity to lift his suspension as an educational navigator to "Magnum," a military-grade android, that people derogatorily refer to as "C.O.P." or "Court of Puppet." Will this unlikely pair have what it takes to defy the dark underbelly of this neon city?