Together they learn the true meaning of friendship.

Lucky and Zorba

A seagull is caught by the black tide of a sinking petrol ship. She manages to fly inland and falls down in a garden by a cat. Moribund, she asks the cat to fulfill three promises: that when she lays her egg he must not eat it; that he must take care of it until it hatches; that he would teach the newborn how to fly.