Nah Ok-Bun is an elderly woman who is notorious for filing citizen’s complaint at her district office and is nicknamed “Goblin Granny”. When Ok-Bun meets Park Min Jae, a young man who has recently been appointed as a junior civil service officer, she is dissatisfied with his attitude of not caring about her complaints and only trying to do the jobs that are assigned to him.
But there is an opportunity for these two as Ok-Bun wants to learn English. The senior class run by the local resident center does not fit her level, and the class at the English academy is too fast-paced and so she is eventually kicked out of the class. Ok-Bun sees Min Jae speaking English very fluently with a native speaker in the academy. Forgetting all the troubles she had with Min Jae, Ok-Bun asks Min Jae to teach her English. Min Jae refuses Ok-Bun’s request because he does not want to take on the troublesome role. When Min Jae sees Ok-Bun taking care of his younger brother, Young Jae, he is moved by her warmth and agrees to become her English teacher. Min Jae teaches Ok-Bun and Ok-Bun’s English improves.