Prologue

Today I learnt about Prologue
Prologue Definition:
A prologue can be understood to be a sort of introduction to a story that usually sets the tone for the story and acts as a bit of a backgrounder or a “sneak peek” into the story. Prologues are typically a narrative ‘spoken’ by one of the characters and not from the part of the author.
Example:
1. "The origin of this story is..."
2. “It all began one day when…”