The mind often wonders, ‘what is the meaning of life?’ The Holy Quran answers, “He, who created death and life that He may test you [to see] which of you is best in conduct. And He is the Almighty, the All-forgiving.” Life was created so that the community of man may strive to achieve excellence. And it is through the triumph of justice over oppression and of virtue over vice that such excellence can be attained. Because this is the overarching purpose of creation, God has given mankind the means to usher in this triumph of justice and virtue – “Certainly We sent Our apostles with manifest proofs, and We sent down with them the Book and the Balance, so that mankind may maintain justice.” God has given us our honored prophets, our holy scriptures, and our revered Immaculate Leaders as means of guidance as we strive towards that goal. And one day, by God’s grace, we will achieve that goal and fulfill God’s promise that “Certainly We wrote in the Psalms after the Torah: Indeed Our righteous servants shall inherit the earth.” This book is about the man who is chosen to usher in this promise of justice and virtue – our Twelfth Immaculate Leader, the Awaited Savior – the Mahdi.