A specific, candid discussion about living a morally clean life and why it matters! Addressing youth and young adults, Elder Gene R. Cook discusses the principles of the gospel that can defend us from the forces of evil that threaten to overwhelm us. Describing the pitfalls that often lead to transgression, he gives warning signs and shares his proven thirteen lines of defense that, if applied, will protect anyone from an increasingly wicked world. He illustrates each of the thirteen with stories and experiences, the most dramatic of which is an experience he had with Mick Jagger. Elder Cook also relies on the voices of the prophets, both scriptural and modern, to clarify, illuminate, and explain what it means to live a chaste life and, more important, why it matters.