A drama about Cha Yeon-ho, a reasonable individualist from KAIST, and Min So-hee, a traffic investigation ace with cool judgment and warm sensitivity at the Traffic Crime Investigation (TCI).

• Lee Min-ki
• Kwak Sun-young
• Heo Sung-tae
• Lee Ho-cheol
• Choi Moon-hee
• Jisung
• Ham Eun-jung
• Uhm Hyun-kyung