Ra Eun Seo and her two friends, Min and Nari, live in a destitute North Korean town. During a foraging expedition for food, they stumble upon a radio broadcasting music and news from South Korea, leaving them in awe. But possession of any material from the South is strictly prohibited, and the consequences plunge them into a whirlwind of chaos.

Locked away in a labour camp, the three friends realise that just escaping prison will not be enough to save them.