Do Eun Soo is a single woman in her 30s who lives a mundane life as an office worker, trying to get through tough times calmly with all the office survival skills she learnt through the years. Her predictable day-to-day life soon gets swept up in an office romance, with the arrival of a handsome new co-worker and a long-time colleague's sudden change of demeanor towards her. She deals with the challenges in her work and love life by finding comfort in delicious food.

The 'Dangwon Office' is a real restaurant drama featuring stories about her work and love in her 30s who are working in the office