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.

A grumpy old woman befriends a young civil servant and learns English from him. She then reveals to him her shocking past.

Anchan and Deokwoo are inseparable friends, one helping the other approach girls and write love letters. Yet their feelings are drifting in different directions.