Following a terrible ordeal under a rigid and inflexible boss, Ka Yeol-chan (Park Hae-jin) reverses his fortune to become a very successful Head of Department. When he takes on a new batch of recruits he is surprised to find his previous manager Lee Man-shik (Kim Eung-soo) has signed up as an intern.
| Also Known As: | Old School Intern |
| Directed by: | Nam Sung-woo |
| Written by: | Shin So-ra |
| Starring: | Park Hae-jin, Kim Eung-soo, Han Ji-eun, Park Ki-woong |
| Extended Cast: | Noh Jong-hyun, Park Ah-in, Ko Gun-han, Hong Seung-bum, Go In-beom, Son Jong-hak, Jung Kyung-soon, Kim Ki-cheon |
| Original network: | MBC |
| Original release: | 20 May 2020 - 9 July 2020 |
| No. of episodes: | 16 |
| Distributor: | MBC |
| Source: | MBC |
