"The film tells the romantic experience of the male protagonist Qian Niu (played by Cha Tae-hyun) and his new "savage" girlfriend Xingxing (played by Song Qian) from falling in love to getting married. Xingxing is Qian Niu's first love in elementary school. Because she is not fluent in Korean, she is often bullied by her classmates. Qian Niu still couldn't forget her ex after breaking up with her at first, until one day..."