The feeling of indifference, being a Perfect Machine for the Emergency Response Team (ERT) Han Jisung, since childhood had grew up in a harsh environment. where his life laid in the hands of someone else, but built with no emotion and becoming a machine of indifferenece, he was given the task to track down and take the leader of just another Mafia crew down. that was the order. Lee Minho raised on the other side of the cities district was sent on a mission to take out the first in command of the military crew thats been tracking their Mafias everymove. The two right on eachothers tails was more complicated when Jisung saves Minho from a death sentance when he himself gets caught in a sticky situation. but was it worth the risk? when you are NOTHING but the Perfect Machine?