Eun Chan is a licensed taekwondo instructor who parts time as a delivery woman. One day, she comes across a delivery order that leads her to Han Gyeol, an heir to a conglomerate. Her boyish appearance deceives everyone into thinking that she's a strong man with a petite figure. Han Gyeol, on the other hand, being relatively close to men leads his grandmother to think he's gay. Eun Chan and Han Gyeol's entanglement lead to them working in a cafe, which soon brews a different kind of love story. They face multiple problems along the way that bring themselves closer and their love stronger than ever. Alongside them would be Han Gyeol's cousin Han Sung and his ex Yoo Joo who happen to be dating as well. Their love triangles bring excitement as they test another level of friendship and family.