Go Eunchan supports her family by working two jobs: as a Taekwondo instructor and a food delivery girl. While making a delivery, she meets Choi Hangyeol, the grandson of chairwoman Bang of Dongin Foods, a company that has a thriving coffee business. Hangyeol is a smart young man, but he is fiercely independent and abhors the thought of being tied down by one career in his life. Sporting a short haircut, Eunchan looks like a guy instead of a girl. Meanwhile, Chairwoman Park Soonyoung arranges blind dates for her grandson Hangyeol to see him settle down.