The story of a how a young Japanese girl's understanding of the historic and tragic bombing of Hiroshima is transformed by a memorial lantern-floating ceremony.

Twelve-year-old Nozomi lives in the Japanese city of Hiroshima. She wasn't even born when the bombing of Hiroshima took place 25 years earlier. Every year Nozomi joins her family at the lantern-floating ceremony to honor those lost in the bombing. People write the names of their deceased loved ones along with messages of peace, on paper lanterns and set them afloat on the river. This year Nozomi realizes that her mother always releases one lantern with no name. She begins to ask questions, and when complicated stories of loss and loneliness unfold, Nozomi and her friends come up with a creative way to share their loved ones' experiences. By opening people's eyes to the struggles they all keep hidden, the project teaches the entire community new ways to show compassion.