WATCH: Park Hae Jin is a Fault-Finding Boss in New MBC Drama "Kkondae Intern”

MBC's upcoming drama "Kkondae Intern" has released some new stills! "Kkondae Intern," also known as the "Old School Intern," is an office comedy that tells the story about a man who was able to finally achieve his sweet revenge towards his old boss, who once made his life miserable.

Actor Park Hae portrays the character of Ga Yeol Chan, who, after finishing his school, got his first job at a company. His boss in that company was Lee Man Shik, portrayed by Kim Eung Soo, who is considered a "kkondae" (a rigid, old school type of person).

Lee Man Shik would force his old school ways on Ga Yeol Chan, which forced him to quit his job in that company. Then, eventually, Ga Yeol Chan found another job at a ramen company. There, he worked so hard due to his radical planning and aggressive marketing. He moved up to the corporate ladder quickly, like lightning speed. Ga Yeol Chan got promoted swiftly and became the head of the marketing team at Jun Su Foods. His new position holds great power in the company.

One fine day, Ga Yeol Chan gets to hire a senior age intern. Lee Man Shik now becomes his subordinate at Jun Su Foods. Apart from the promotion of being the head of the marketing team, Ga Yeol Chan developed a popular new type of ramen, so now Ga Yeol Chan now has the character and skills, which are perfect for his revenge against Lee Man Shik.

Ga Yeol Chan showcased his transition into a good-looking boss having the personality of mocking the older man. Meanwhile, Lee Man Shik, who was once his boss that scolded his own intern for performing poorly, was humbled down into a pitiful intern himself.

Meanwhile, Park Ki Woong portrays Namgoong Jun Su, who is over the top and crazy CEO of the ramen company, which eventually shifts into a friendly superior. Namgoong Jun Su once showed off his domineering side as a CEO and then became more understanding of his workers.

"Kkondae Intern" or "Old School Intern will feature the relationships between the different characters and also each character's personality development as something that can bring a sense of comfort for viewers. And lastly, the drama will highlight the balance of racy lines, criticisms of life, and indecent bosses mixed up with comedy, while even making moments of relatability for viewers through the drama's realistic setting.

"Kkondae Intern" is scheduled to premiere on May 20 and will also be available on Viki.

Watch the trailer below!