Scheme

DEF: an organized plan for doing something.

He has a crazy scheme to get rich; he plans to buy and sell moon rocks.

Merriam-Webster Online Dictionary
scheme (noun)
1.
a) archaic
(1) a mathematical or astronomical diagram
(2) a representation of the astrological aspects of the planets at a particular time
b) a graphic sketch or outline
2.
a concise statement or table - epitome
3.
a plan or program of action , especially a crafty or secret one
4.
a systematic or organized configuration - design color scheme plan
scheme (verb)
transitive verb
intransitive verb
to form a scheme for to form plans , also - plot intrigue