In the city of Baghdad lived a man named Sinbad the Porter, who was very poor. One day, tired of carrying heavy burdens under the sun, he stopped to rest in front of a magnificent mansion. The owner of the house, a rich and kind old man, invited him in. He introduced himself as Sinbad the Sailor and said: 'Do not think my wealth came easily. I have survived seven voyages full of unimaginable dangers. Listen to my story'.