The pioneer camp hosts an international session, welcoming children from the Soviet Union, Germany, France, the United States, Japan, and other countries.
Guided by Elena Ivanovna, the Soviet children act as wise and hospitable hosts, resisting various provocations.
The international teaching staff agrees to avoid political propaganda, but this agreement is occasionally broken.
They fold paper cranes for her, and a global medical council gathers at the camp to discuss treatment options.
Both children and adults come together in a shared determination to prevent another tragedy like the atomic bombings of Hiroshima and Nagasaki.