Cha Chul-soo (Kang Ji-hwan) is an overzealous and overweight detective who stops at nothing to catch his suspect. He doesn’t a waste any precious moment to shower, and dresses in ramshackle and sometimes dirty clothes. However, when another cop was injured and unable to go undercover in the city's biggest criminal cases, he steps up to the plate and accepts the challenge to be transformed into a runway model in 60 days. Among the challenges of losing 20 kilograms in 2 weeks, Cha also have to work with high school alum Ko Young-jae (Sung Yu-ri), who is the designer. Convinced he stinks and will ruin her show, she sets him the impossible. With so much to learn in such a short period of time, Cha case turns into the biggest radical makeover at the hands of fashion designer.