master plan

US /ˈmæs.tər ˌplæn/
UK /ˈmæs.tər ˌplæn/
"master plan" picture
1.

a comprehensive plan of action, often long-term, designed to achieve a major goal or solve a complex problem

:
The city council approved the new master plan for urban development.
Their master plan involves expanding into new markets next year.