There are myriad stories within one, not all binding towards one end, but branching out on their own. It's true for epics like the Ramayana and Mahabharata and it's true for modern fantasy fictions like JRR Tolkien's Lord of the Rings and JK Rowling's Harry Potter series.

And, Chritopher Paolini's The Fork, The Witch and the Worm: Tales from Alagaesia published by Penguin Random House India. The book is set in the post Inheritance (2011) period when Eragon and Saphira move to Mount Argnor. It is a compilation of three stories - in one tale Paolini's sister Angela has written the memoirs of Angela the Herbalist.