Ten-year-old Sakura lives a pretty normal life with her older brother, Toya, and widowed father, Fujitaka. Or she did, until the day she returned home from school to discover a glowing book in her father’s study. After opening the book and releasing the cards within, Sakura is tasked with collecting each of these magical cards, while trying to live the life of a normal fourth grader. In the monumental task of collecting all the cards, Sakura must rely on her friends and family, and decide what she finds most important in life.