The next night, the porter indeed returns, to find the company gathered again to hear of Sinbad's second voyage.
Though wealthy after his first voyage, Sinbad eventually became restless of staying in one place. Longing again for the sea, he set sail.
The ship docked one day at a seemingly uninhabited island, and the sailors went out to explore. It being a lovely day, Sinbad fell into a nap. Unfortunately, he awoke to find he had been accidentally left behind (again).