Doyeon can’t sleep at night, and it’s all because of her mysterious neighbor. It’s not just the loan sharks constantly banging on the next door apartment, but it’s the crying that keeps her up at night… Despite knowing she should stay away, Doyeon can’t help but wonder about her lonely neighbor who cries herself to sleep. Then one day, when the loan sharks are just about to kick down her door, an older woman comes running out of there and Doyeon ends up hiding her in her apartment. They say “love thy neighbor,” but they didn’t tell you doing so would come at a price…