Detective Lee is the sole survivor of the mysterious ambush that killed Assemblyman Doh- as well as every other character in the prison transfer truck, except, rather conspicuously, for Detective Lee herself. This makes her the prime suspect. Inspector Ryoo, coward that he is, doesn't really want to get any more involved. But K has promised to abandon taking control of Inspector Ryoo's body if Inspector Ryoo can get her out of prison. So for once, Inspector Ryoo is determined to be a good cop, Bad and Crazy, Tracer, Captain Kim, Cha Hak-yeon, Han Ji-eun, Kang Ae-shim, Kim Dae-gon, Kim Sae-bom, Lee Dong-wook, Wi Ha-joon, Yoo Seon-dong