One day, without knowing how or why, the birds of a big city leave, disappear. It is believed to be a protest against environmental pollution. Some children (the Regaliz group), then embark on an ecological campaign to get the birds to return to the city.

Supertot leads a double life as a journalist and hero, in love with Gladys and competing for her affection with Jimmy, a coworker. Adaptation by the U de cuc theater company of the original play by Josep Maria Benet i Jornet.