The term 'Grand Story' can be broken down into two crossword solutions: EPIC and EPOS. EPIC is a noun that refers to a long narrative poem, usually about heroic deeds and events of national or historical importance. EPOS is also a noun that refers to a story or poem that is composed in an elevated style, often with a moral or religious theme. Both terms are used to describe a grand story, which is a narrative that is larger than life and often has a moral or spiritual message.