The Old Man and the Sea by Ernest Hemingway describes an episode in the life of the fisherman Santiago and his apprentice Manolin. Santiago has gone 85 days without catching a fish. He finally manages to capture a huge marlin, but sharks strip it of its flesh before Santiago can bring it ashore. Santiago's hands are injured in his fight with the marlin and attempts to fend off the sharks. There are a few different strategies you can use to write a sequel, depending on your choice of what happens to Santiago.
- Santiago dies. If you choose this path, you might start your sequel with Manolin observing or reflecting on the death of Santiago and perhaps inheriting Santiago's skiff and making his own first solo fishing voyage. This sort of sequel would focus on Manolin's coming of age after his mentor's death.
- Santiago fully recovers. If you take this path, you might tell a story of Santiago's next voyage, perhaps one reflecting a renewed vigor and optimism.
- Santiago lives, but is crippled and cannot fish. This might be a somewhat darker story, in which Santiago descends into alcoholism and spends his days dreaming of past voyages.