Moon-jung is a caregiver who has a son in middle school. After getting divorced, she can't bear to bring him to her house, a plastic greenhouse she has converted into a home. She strives to raise the necessary funds to move into a real home for her and her son.
It was one day after summer vacation, in 2008. Sojeong, a senior high school student, lives with her sick mother, but dreams to live alone and be a musician though the reality is frustrating. Just listening to music on MP3 and writing down the lyrics of the songs she wrote on her mini-homepage is Sojeong´s only escape.
After Seon-yoo's father committed suicide leaving behind a large sum of debt for them, Mother and 12-year-old Seon-yoo move to a new place to have new start.