Young-Jae (Im Ji-Kyu) is an aspiring webtoon writer. He works part-time at a convenience store during the day. Young-Jae has been unable to sleep for 1 year.
Yoo-Jung (Im Se-Mi) is unemployed. She has been unable to sleep for 2 years. Young-Jae and Yoo-Jung live in the same neighborhood and they happen to meet. Due to their insomnia, they have similar routines and meet often. They become attracted to each other.
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