cliff anger
The unfiltered rage associated with plot lines, climaxes or any other general important issues, events or actions in any work of fiction that is just left hanging there with no resolve, usually to never be closed, solved or resolved.
"Why is Joe so pissed?" "Because {insert title of tv show here} was canceled before he found out how the maid was murdered." "Ohhh, cliff anger huh?" "Cliff anger."