master plan; overall plan
Refers to a comprehensive, high-level plan covering all aspects of a project or undertaking.
The city's overall redevelopment plan was announced.
We need to create a master plan for the project.
計画 is a general plan, while 全体計画 specifically emphasizes a comprehensive, all-encompassing plan.
基本計画 is a basic or fundamental plan, often a preliminary stage; 全体計画 is the full, integrated plan.
Compound of 全体 (whole, overall) and 計画 (plan).