The document outlines the history and financial structure of Moore Plumbing Supply, founded by Mort Moore after World War II, and highlights its growth and reliance on equity financing. Tom Moore, the new CEO, is concerned about the company's heavy reliance on equity and seeks to understand the implications of capital structure, including debt usage and its effect on earnings and stock price. The document also delves into the theoretical frameworks of capital structure and finance, particularly focusing on the work of Modigliani and Miller and addressing various financial risks.