About a man who ends up taking a demotion and starting a new position as an intern under a mouthy superior, who will be played by Kim Eung Soo. Han Ji Eun would play the role of Lee Tae Ri, a senior intern in the same company.
Ahn Sang Jong tries his best to get Lee Man Sic to join Joonsu Food as a senior intern. After a night of thinking it over, Man Sic starts his first day in the office. However, he recognizes a familiar face, Ga Yeol Chan.
Yeol Chan tries to make a difference as an intern at Ongol. But his superior Man Sic treats him as a good-for-nothing employee. Eventually, when Yeol Chan realizes that the company will risk anything for its own benefits, he decides to expose the truth about Man Sic’s wrongdoings. However, Man Sic quickly counters Yeol Chan’s plan.
After five years, Yeol Chan successfully managed to become a general manager at Joonsoo Food, Ongol’s rival company. On the contrary, Man Sic is on the verge of getting laid off from Ongol due to his age. Man Sic even declines the warehouse management position that the company is offering. In the end, Man Sic somehow joins Joonsoo Food and meets Yeol Chan for the first time in five years.
War starts. Ga Yeol Chan promises himself to repay all the hardships Lee Man Sic put him through. Man Sic, on the other hand, pledges to stick with it until he puts his son through college. Not only that, his friend Ahn Song Jong at Joonsu Food, puts him on a secret mission.
Man Sic accidentally misreads what was written on the order sheet and delivers 300 boxes of Super Spicy Chicken Ramyeon to the elderly who are living alone. When Yeol Chan realizes that the ramyeon could be detrimental to them, he orders the whole team to recover all Super Spicy Chicken Ramyeon. Meanwhile, Man Sic finds out that his team doesn’t want to be around him.
Yeol Chan and his team were convinced that they’ve recovered all Super Spicy Chicken Ramyeon delivered to the elderly. However, a video goes viral. In this video, a man faints after eating Super Spicy Chicken Ramyeon. Yeol Chan and his team desperately search for the man in the video to save the man as well as their company.
Yeol Chan retrieves Man Sic and gets him his job back but ends up with his neck on the line. However, when Joon Su reports Yeol Chan to the chairman, the chairman only thinks of promoting him. Meanwhile, Man Sic makes a phony customer feedback report, and the company enforces a new campaign where employees buy their products.
After seeing the intern evaluation sheet, Yoon Soo threatens Yeol Chan to tell everyone about how he killed someone. Meanwhile, Yeo Hong Seok, the rice soup restaurant owner, dies. Drenched with guilt, Yeol Chan earnestly requests Joon Su to drop any charges against the company in the current carcinogen case.
The shocking news of Man Sic and Tae Lee's father-daughter relationship gets known in the office. Tae Lee and Yeol Chan's fling also comes out in the open, humiliating Yeol Chan and getting him a smackdown from Man Sic. Meanwhile, interns scramble to find partners for their final evaluation presentation to land a permanent position.
Everyone helps out in exposing Koo Ja Sook and clearing Yeol Chan's name. With their help, Ja Sook gets what she deserves, and Yeol Chan becomes Joonsu Food's managing director. However, when he sets things straight, Yeol Chan resigns and starts a company of his own.
Yeol Chan takes Man Sic to the hospital after seeing him collapse. At the hospital, Yeol Chan learns about a man from his past lying brain dead taken care of by Man Sic that triggers a slight change of heart. Meanwhile, someone claims to have found a cockroach in a Spicy Chicken Ramyeon package.
Yeol Chan takes the blame for erupting the cockroach incident and is put on standby with the possibility of getting fired. However, Man Sic and the team don't give up and look for possible leads in the case to save him. Meanwhile, Yoon Soo continues to search for the culprit who wrote the nasty letter he found in the shredder.
Someone puts bought ramyeon up for sale cheap that stirs up a commotion in the office. Knowing it's too much pressure for some, Yeol Chan offers to reimburse their purchases. However, things get out of hand with the campaign, and Yoon Soo figures out who wrote the nasty comments.
Yeol Chan and Man Sic get stuck on Manji Island for days. Luckily, Man Sic knows how to pack for an outing, and with his sack, Yeol Chan and Man Sic experiment with different ramyeon recipes. Meanwhile, Joon Su, Tae Lee, and Yoon Soo party it up, and Cha Young Seok makes some impressive deals overseas with Greasy Ramyeon.
Ja Sook and Joon Su continue to slash at Yeol Chan, doing whatever they can to stop him from becoming a junior managing director. But Joon Su finally sees the whole picture behind Ja Sook's ulterior motive after finding out Man Sic is Tae Lee's dad and a short presentation by Ok Kyung. Meanwhile, Man Sic gets kidnapped.
Yeol Chan rescues Man Sic in the nick of time. Joon Su, Tae Lee, and Ok Kyung also show up to give a helping hand with the fighting. When they return to the office, Yeol Chan finds out he's a candidate for the managing director. However, his office gets turned upside down by the Inspection Department due to a company event scam pointing to him.Watch Now:Amazon
Man Sic loses his idea to Oh Dong Geun for a new ramyeon flavor. As he sulks while skipping lunch with the team, Yeol Chan orders him to make a few prints off his computer. However, on Yeol Chan's computer, he sees an eye-opening email. Suddenly, a computer virus spreads throughout the office.Watch Now:Amazon
Manager Cha Young Seok gets assigned to the Marketing and Sales Department during Yeol Chan's at home probation. Upset and disgusted at his given situation, Yeol Chan calls his interns, Tae Lee, Yoon Soo, and Man Sic, to join him on a trip to develop a new recipe. Meanwhile, Joon Su tells Man Sic to update him with every step of their covert mission.Watch Now:Amazon
Yeol Chan and his interns try out local ramyeon restaurants and try to learn from it. But his tenacious, unyielding work ethic drives Man Sic and the others mad. In the end, Man Sic partners up with Yeo Chan to head to an island to taste Grandma's Ramyeon but runs into stormy weather.
Yeol Chan puts all his energy into finalizing his new recipe, Spicy Webfoot Octopus Ramyeon, and collapses. After he recovers, the unique flavor takes over the market. However, at the height of its success, a carcinogen is found in one of the ingredients.
Yeol Chan resorts to asking Cha Young Seok for help in the overseas market to save his Spicy Webfoot Octopus Ramyeon, and a video of Tae Lee gulping down Spicy Webfoot Octopus Ramyeon samples goes viral. Meanwhile, Jung Eun gives Yoon Soo a go at their relationship, and Namgoong Pyo considers appointing Yeol Chan as the managing director.
Koo Ja Sook uses an article about corruption in Joonsu Food's recruitment to force Yeol Chan to give up becoming the junior managing director. Meanwhile, partnerless Man Sic tries to persuade Tae Lee to partner up for the presentation, and Yoon Soo and Jung Eun break up.
Man Sic, Yoon Soo, and Tae Lee get taken in by the police for questioning regarding Joonsu Food's recruitment corruption, along with Joon Su, Sang Jong, and others. However, further investigation reveals it's not at all what it seems to be. Meanwhile, Yeol Chan goes through deep self-reflection on how he has been judging people.
Man Sic tries to redeem himself and writes up the proposal for his ramyeon idea after attending a computer academy. However, it's harder than he anticipated. When he gets it done, he still has to face Yeol Chan's harsh words. Meanwhile, Yeol Chan tries to make things right after finding out it was his fault for spreading the computer virus.