One day, amidst falling cherry blossom petals, Seungjun and Jui meet by chance. Drawn together by fate, they promise to meet the next day, but Jui suddenly disappears and doesn't show up. A year later, Jui reappears in the same place as if by magic, revealing a surprising secret to Seungjun... Jui's time flows differently from others, and she can only stay in this place while the cherry blossoms are in bloom. Until spring returns, Jui has only one day, while Seungjun has a year. There are only 7 days in Earth's time for them to meet again across the seasons. Will their love endure?