Seven girls become good friends in high school, then events pull them apart for 25 years. When one of the friends lies dying in a hospital, she wishes to see each of them one last time.

Despite her disabled leg, the Ph.D. student Jae-yeon is a brilliant researcher with a rare ability to communicate with nature. Having been hurt by her hypocrite colleague and lover, she turns her back to the world and goes deep into the forest to live alone in a glass garden.

Eun-soo and Eun-ha, a couple, left of the popular music production company to shout their individuality and form a Milky Way band with Dong-eun. Meanwhile, Dong-eun, who was investing to earn living expenses, even invested the band's money, but failed.The rest of the members, angry at Dong-eun who disappeared, sell the guitar that means a lot to Dong-eun... Dong-eun returns and goes on a journey to find a guitar.

In the 1980s a group of foreign-born Korean teenagers who meet at a Seoul summer camp to learn what it means to be Korean. The three boys, from the U.S., Mexico, and Germany, then meet three girls who rock their world.