Kkondae Intern is an office comedy that depicts a man's delightful revenge on his previous boss, who was also his worst manager. Ka Yeol-chan (Park Hae-jin) had a bad internship experience because of a nasty and overbearing boss. He quits his job and starts working in a ramen company. With his sheer hard work, he develops a chicken noodle recipe — which becomes a top product — and gets elevated to the position of general manager. Lee Man-sik (Kim Eung-soo) is a manager in the Ongol Ramen Department, and has a reputation as a "terror senior". After 30 years in the company, he loses hope of being promoted to an executive position before retirement. So he takes and passes the Senior Internship at Junsu Food. A reversal of fate occurs, and now Lee Man-sik starts working as an intern at the same company and is assigned under Ka Yeol-chan.[unreliable source?
