The summary is: 1) The book tells the story of Levi Strauss, who invented durable pants for miners made of denim, which became known as blue jeans. 2) It details Levi's journey from a peddler in Germany to establishing a clothing company in San Francisco with his brother-in-law and Jacob Davis. 3) The book shares how Levi's jeans with copper rivets became popular and how Levi donated much of his wealth, dying a generous millionaire.