When discussing ‘diegetic levels’ of a story, imagine a ground floor. Level zero. All events and characters featured on this level are part of the story. Level zero is the normal, basic narrative level in a text. A story may not have any other levels, but it will at least have a ground floor. This happened, that happened, the end.
As for the other levels, think of ‘meta’ as above and ‘hypo’ as below level zero.
It can get even more complicated than that — in which case a story will be called ‘experimental’. Technically you can get a meta-metadiegetic narrator, or a hypo-hypodiegetic narrator etc.
Pertains to a secondary narrative embedded within the primary narrative. The secondary narrative can be a story told by a character within the main story or it can take the form of a dream, nightmare, hallucination, imaginary or other fantasy element. This kind of narration is typical of idyllic fiction. e.g. Winnie The Pooh. In the Pooh stories, there is a metafictive father telling these stories to a metafictive son over and over again. This wraps the level zero story set in The Hundred Acre Wood. (In general ‘metafiction’ is fiction which draws attention to the fact that it’s fiction.)
This is Story Within A Story narration also known as Embedded Narrative. Any character who produces a further narrative within a narrative is a hypodiegetic narrator.
Think of it as the inverse of metadiegetic. In both metadiegetic and hypo diegetic narration an extradiegetic narrator appears on a different level of the story.
Hypo narratives are sometimes used to create an effect of ‘mise en abyme‘, a favorite feature of postmodernist narratives. (Think of two mirrors facing each other.)
Examples of Hypodiegetic Narration
- Anne Shirley is a hypodiegetic narrator when she tells Marilla about her visit to the concert.
- “Come, Sam, tell us a story,” said I, as Harry and I crept to his knees, in the glow of the bright evening firelight; while Aunt Lois was busily rattling the tea-things, and grandmamma, at the other end of the fireplace, was quietly setting the heel of a blue-mixed yarn stocking. – The Ghost in the Mill, Harriet Beeecher Stowe, first sentence.
- The Canterbury Tales and Arabian Nights — A tells a story about B who tells a story about C and so on. (It’s up to the person studying these texts to decide which level is level zero.)
- The Book Of The Unnamed Midwife by Meg Elison is a modern post-apocalyptic novel with a Canterbury Tales structure to it. A main character meets others on her journey and they either tell her their stories or she steals their diaries.
- In The Thousand and One Nights, Scheherazade’s stories keep the Sultan from killing her. In the end he marries her because she’s such a good storyteller.
- In a crime novel or courtroom drama, a surprise witness may have a tale that solves the case.
- A child in a story asks an adult to tell them a story. The adult telling the story is the hypodiegetic narrator.
- Mary Alice is the hypodiegetic narrator in Desperate Housewives, although when she is shown in the story (in flashbacks before she had died), she is a diegetic narrator.
- In Fortunately, The Milk by Neil Gaiman, a father goes to the shop. When he comes home he tells the children a tall tale. The father is the hypo-diegetic narrator.
- George and Harold are the metadiegetic narrators (and illustrators) of the Dogman books by Dav Pilkey.
A narrator who exists — in full or in part — on a different story level from the other characters is more commonly known as a storyteller. For more on how to write fiction making use of a storyteller narrator, see this post.