Meaning

noun a secret scheme to do something (especially something underhand or illegal)

noun a small area of ground covered by specific vegetation

noun the story that is told in a novel or play or movie etc.

originFrom Middle English plot, plotte, from Old English plot (“a plot of ground”), from Proto-Germanic *plataz, *platjaz (“a patch”), of uncertain origin. Cognate with Middle Low German plet (“patch, strip of cloth, rags”), German Bletz (“rags, bits, strip of land”), and possibly Gothic 𐍀𐌻𐌰𐍄 (plat, “a patch, rags”). See also plat. See also complot for an influence on or source of noun sense 5. Noun…

Etymology from Wiktionary, CC BY-SA 3.0