Ji-Woo's (Lee Si-Young) parents died in an accident while driving their own vehicle when she was little. Now a detective herself, Ji-Woo is learns to trust her own sense and abilities over the judgement of any Artificial Intelligence (AI). She does not like that she has to follow instructions from a computer when she chases a criminal. Ji-Woo soon gets paired with a new partner, but her partner is an AI called Seo-Nang (Ha-Joon).