During a school trip to Hiroshima Peace Memorial Park, Mii and Yuko stumble upon a forgotten monument honoring Dr. Marcel Junod. Transported back to 1935 Europe, they follow Dr. Junod's journey as a young doctor aiding war-torn regions like Ethiopia and Spain. Witnessing the atrocities of war, Dr. Junod's unwavering compassion inspires Mii and Yuko to contemplate their own challenges and the importance of empathy and support in times of turmoil.