Ban Ji-eum can endlessly reincarnate. But when her 18th life gets cut short, she dedicates the next one to finding her now grown-up childhood love.

Every day is extraordinary for five doctors and their patients inside a hospital, where birth, death and everything in between coexist.

Based on a popular 2017 Web Novel of the same name, it tells the love story between a lovely "sunbae" and a bold "hoobae".