Oh will star in "The Great Actor", a comedy about an obscure actor who struggles to be a movie star.
"While filming, I was able to reflect on things from my past", Oh said. "There were many scenes that reminded me of the moments that I shared with co-actors and friends when I first started acting".
"I like Oh and his acting style", said Seok Min-woo who directed the film. "It was regretful for me to see him mostly playing a small part, so I wanted to make a film in which he appears from the beginning to the end".
The film will hit local theaters sometime in March.