When her father shirks his debts, Shion Adachi is sent in his place to work at the flower shop where he owes money, much to her dismay. Living with the 25-year-old florist, Shun Mamyuuda, the rebellious 17-year-old reluctantly takes on the task of repaying her father's loan during her school break. Initially suspicious of Mamyuuda's kindness, Shion gradually realizes his genuine goodwill, sparking her curiosity about his motivations. As Shion immerses herself in arranging flowers, she discovers the joy of brightening customers' days with her bouquets. Through the silent beauty of flowers, Shion unravels the true depth of her predicament and begins to see the sincerity behind Mamyuuda's gestures.