When the victim of a stalking incident that Dae Gu and Soo Sun were inspecting, ends up getting stabbed with a knife, Gangnam Precinct is flipped upside down once again. Pan Seok strongly blames Dae Gu and Soo Sun and Dae Gu ends up attacking Pan Seok. Soo Sun ends up writing a letter of resignation from the guilt and the others are trying to convince her to retract it when they end up in a real big mess...