This film was commissioned by the International Children's Assembly, 1985. Ernesto is a boy from Nicaragua. In his homeland, a Bulgarian doctor works, who is friends with Ernesto. The boy sings well. He is invited to visit Bulgaria during the children's assembly. Along the way, he experiences a number of twists and turns. His Bulgarian friends are looking for him all over Bulgaria. Ernesto and his friends meet at the closing of the assembly. They experience unforgettable hours.