When your show has reached the climax of it's first chapter and is starting to get REAL GOOD but is cut off by the network. Not to be confused with "actual end," which is the real end of a story.
Boy: Wait - so are they alive or dead?!
Girl: We'll never know. HBO let the story come to a natural end.
Girl: We'll never know. HBO let the story come to a natural end.
by VKX May 13, 2005