Yuriko leads a quiet, orderly life as a piano teacher. It's New Year's Eve and her grown-up son Izumi comes to visit. Yuriko makes him his favourite meal: omelette and hayashi rice. Together, they look like a normal family. But Yuriko has a secret. Many years earlier, when Izumi was a boy, Yuriko suddenly disappeared for an entire year. She returned, but the lost year was never discussed. Now as Yuriko begins to lose her memory, Izumi is forced to race against time as he seeks the truth behind this long-buried mystery. Will he learn to understand the woman his mother once was, before it is too late? And is he ready to become a father himself? One Hundred Flowers is a story about the preciousness of every moment, the beauty and pain of family love, and the healing power of letting go.