The document outlines the structure and powers of the legislative department of the Philippines, detailing the composition, election, and functions of Congress, which is bicameral consisting of the Senate and the House of Representatives. It discusses the legislative powers, including general and specific powers, the role of the party-list system, and eligibility criteria for members of Congress. Additionally, it covers the essential procedures for sessions, termination, compensation, and various immunities and disciplinary measures for legislators.