Two gutsy food delivery workers strive to overcome their socioeconomic disadvantages to achieve big goals -- and bump into love along the way.
Catching the eye of a wealthy gentleman, spunky Ha-won gets hired to live with his three immature grandsons so she can whip them into shape.
Na-Yeon is a bright woman. She supports her boyfriend Tae-Joon, who is from a poor background, and has even given up entering a university. But Tae-Joon dumps her for his success and goes with Se-Jin, who is a granddaughter of Baekdoo Company president. Do-Hee is Na-Yeon’s twin sister. She is arrogant and tough. Do-Hee works as a reporter at a weekly magazine. After Na-Yeon’s death, Do-Hee decides to take revenge. She takes on the identity of her sister Na-Yeon. Do-Hee then meets Hwi-Kyung, who is successor of Baekdoo Company.
When she's not making ends meet, Choi Choon Hee hones her skills in trot music, an old-fashioned, but heartfelt genre. Her luck turns when she pairs up with Jang Joon Hyun, an arrogant songwriter who excels in pop hits, as well as Jo Geun Woo, a shrewd talent CEO. Choon Hee's star burns hot, but between work and love, can she overcome the haters and trot her way into success?
Detective Ha Eun-joong uncovers a shocking secret; Ha Myung-geun, the man he believed was his father, had actually kidnapped him as a child. Myung-geun had lost his own son in a building collapse, and as revenge against the man responsible, Jang Tae-ha, he abducted Tae-ha's son and raised him as his own. In the aftermath of revenge, Eun-joong searches for the truth and becomes caught between his two fathers and the woman he loves, Woo Ah-mi.