The story of Ma Ri, a young woman who often daydreams imagining her romantic love story. Especially when she has a crush on Ki Yung, a student majoring in veterinary medicine. Ma Ri has a crush on Ki Yung because she often stops by the bookstore where he works. Not alone, Ma Ri is always accompanied by her two friends, Yoon Hee and Su Ho. Yoon Hee is a friend she met in college while Su Ho is her friend since high school. It turns out that Su Ho is the same as Mari. He also often daydreams and imagines he can date Ma Ri.