A multi-generational story is a narrative that spans multiple generations, often focusing on the lives of a family or group of people. It is a type of long-form storytelling that has been popular in many cultures for centuries. The two words used to describe this type of story are 'SAGA' and 'EPIC'. A SAGA is a long, involved story, usually involving heroic deeds and adventures. An EPIC is a long narrative poem, typically about the deeds of gods or heroes.