The story of the inspection room of a construction company where corruption is rampant, and the calm and principled inspection team leader Shin Ha-kyun and the emotional young people's initial inspection staff work together to restore order. Shin Ha-kyun plays the team leader Shin Ji-il, and Jin Goo plays the vice president Hwang Tae-woong. Lee Jung-ha plays the newcomer Gu Han-su in the inspection room, who is passionate and straightforward and full of spirit.