This volume offers a comprehensive introduction to Imam Mahdi (a.t.f.s), focusing on his background, lineage, and the purpose of his concealment. It discusses various signs leading to his reappearance and the global impact anticipated from his arrival. Through traditions and Quranic references, this book seeks to deepen understanding of the promised Mahdi, emphasizing his role as the divine leader who will restore justice and peace. It is an essential read for those looking to comprehend Shia eschatology and the spiritual anticipation of the Mahdi’s reappearance.