Do Eun Soo is a single woman in her 30s who lives a mundane predictable life working as an office worker, trying to get through tough times calmly with all the office survival skills she learnt through the years. She deals with the challenges in her work by finding comfort with delicious food. With the arrival of handsome new co-worker Lee Ji Yong and long-time colleague Yoo Woong Jae's sudden change of demeanor towards her, Eun Soo soon finds herself in an office love triangle.