Somewhere up high, above the cities of humans and the thoughts of children, a white little cloud is born, little Kosmas. Next to his mother, he enjoys the magical journey in the skies. Like a little child, he gradually learns the secrets and dangers of the unknown sky. As he grows up, he discovers knowledge and adventure. He encounters the joy of play but also the sadness of separation. He experiences the melancholy of loneliness but also the value of friendship. Because Kosmas doesn't only have friends in the sky. He also has them on earth, in the city, at school. And his encounter with a little boy is more than just a friendship: it is a hidden painting in a sketchbook. A sweet image behind the classroom window. A soft and sparse drizzle that falls from above, while the morning sun rises in the azure sky.