After rejecting all the men who were fawning over her big chest, Jihyun realized she became 27. After receiving a wedding invitation from her friend, she became nervous. Beautiful and single, “Jihyun” fell in love at first sight with a man three years younger than her named “Sungwoo.” He’s kind and mature. Moreover, he’s extremely hot. Together, the two experience each other. They go through heaven and hell, hot and cold, but…