Trapped in a Circle

'Noel', who searched and attacked the traitors of the organization, found a man called Kang Jin who referred to himself as nothing but an ordinary homeless person! Even though there were also powerful threats, Kang Jin, the one who ended up fetching Noel's interest, claimed to be unrelated till the end, turning out to be imprisoned in Noel's own officetel… What are the secrets hidden by Kang Jin and Noel's true intentions?