As an unpublished author - and you would have known that by the large number of reviews I have written - a plot, and successful plotting is a fundamental of any fiction. I've lost count of the number of times I have been yanked out of the Willing Suspension Of Disbelief on the page and the screen by the simple and thoughtless mistake of idiotic plotting ; that is, the well known moment where, in order to progress the events, the characters have to do something moronic, stupid, illogical or simply defying any common sense which breaks the internal consistency of the universe.
Remember the bit in the Star Wars movie when R2-D2 uses a small jet pack hidden in his legs - but only uses them once? That's lazy plotting - the Deus Ex Machina - when the author realises he's painted himself into a corner and think up a load of nonsense to solve the problem. Myself, I spend a very long time pulling apart my plots for any such instances to try and avoid these moments - if I'm asking someone to read a work I have writtena nd invest time in it, at the very least, it has to make sense and stand up. A good plot is hard to find ; good ieas are plentiful.
Thankfully this work lays clear all these issues, as well as deconstructing the unconscious knowledge that all writers have, and makes clear 'the wiring under the board'. If you are the kind of person who wants to write something that maintains the illusion, or someone who wants to know how plotting works, you can do a lot worse than starting here. It is a basic and entry-level work, but does exactly what it says on the tin.