If you were to look back on your life, what would you remember most about your high school days and what you and your friends thought was important back then? Sung Shi Won and her five friends were friends in high school in 1997, when the K-pop and celebrity idols were gaining national popularity, and they were swept up in the adoration of their favorite K-pop and other idol stars. To the 18-year-old Shi Won, her entire world revolved around Tony An of H.O.T., and her only aspiration in life was to grow up to become his wife. Her best friend Yoo Jung was her partner in crime, also falling in love with a different idol everyday. Fifteen years later at the age of 33, the six high school friends meet for a mini-reunion, during which two of the friends announce their plans to marry. As they reminisce about the height of their teenage angst, the viewer needs to try to figure out which two friends fell in love during the 15 years since high school.