A romantic and touching tale about four sisters and their quest for true love. Hae-Jung (Hwang Su Jung) is the eldest of four sisters, and is kind and giving to her younger sisters even though she is only their half-sister. In contrast, second sister Yu-Jin (Chae Rim) is ambitious and straightforward, and cares deeply for family friend Young-Hoon (Han Jae Suk of "All About Eve"), causing a lot of problems for everyone. Third sister Sung Yu Mi (Ahn Yeon Hong) is materialistic, and gets engaged to a rich gentleman despite having another more suitable lover (Ji Jin Hee of "Dae Jang Geum"). The fourth sister Sung Yu Sun (Park Yae Jin) is a high school student with a heart problem and an ardent love for her high school teacher! As the years pass, each sister struggles to find true love, and conflicts and difficulties arise. But through it all, they remain true to each other.