The book "Legacy" by James Kerr is about the success of the New Zealand rugby team, the All Blacks, and what businesses can learn from them. It explores the values, principles, rituals, and beliefs that have helped the team achieve such outstanding results. The author delves into the secrets of their success and how they maintain their winning ways over the years. The book provides insights into how companies can create a culture of success by adopting the principles that guide the All Blacks' behavior. It also explores how businesses can develop rituals that reinforce their values and beliefs, creating a sense of belonging and unity among employees.