Yu Yinxun (YUI), a 16-year-old girl living in a seaside town, is young and beautiful, but she can't play and run freely on the sunny beach like her peers. It turned out that Kaoru suffered from a rare disease, XP xeroderma pigmentosum, and her skin could not be exposed to sunlight, otherwise her life would be in danger. From then on, Kaoru could only hide at home all day, and the only pleasure was to stroll to the station square at night and sing his favorite song. In the process, Kaoru gradually falls in love with Fujimoto Takeshi, a surfing boy who often passes by the station (Takashi Takashi). One day, she had the courage to catch up and confess her love to Xiaozhi. The gentle sea breeze is blowing their slowly warming love. However, Hyun is like Cinderella in a fairy tale. No matter how nostalgic she is, she must get home before sunrise. For her, when the fire of life is weakening, both love and music have become extremely extravagant things.