In 1999, a teen girl keeps close tabs on a boy in school on behalf of her deeply smitten best friend – then she gets swept up in a love story of her own.

Mi-so, a 12 years old girl who transferred from Seoul to Jeju island, meets Ha-eun. They promise never to seperate. At the age of 18, Ha-eun's boyfriend, Jin-woo breaks two girls's friendship. ...

In a cutthroat world where the life you’re born into decides your success, three aspiring youths are determined to change that perception as they fight for their dreams.