When the cherry blossoms bloom, the moment of love between me and her is only allowed for seven days. One day while falling cherry blossom petals fluttered, Seung Joon and Joo Yi ran into each other. The two, who are drawn like fate, promise to meet the next day, but Joo Yi, who suddenly disappears, does not appear in front of Seung Joon. A year later, Joo Yi reappears in the same place and tells Seung Joon a surprising secret... That is, Joo Yi's time flows differently from other people, and she can only stay when the cherry blossoms are in full bloom. One day for Joo Yi and one year for Seung Joon until spring comes again. Only seven days for them to see each other throughout the seasons. Will their love be able to continue?