Becoming a first-time father is an important transition period in men's lives that is frequently accompanied by joy and happiness. Engaging fathers has a broader impact on family and community and on fathers' own well-being. This study explores the process of men becoming first-time fathers and the experiences and challenges involved. Seventeen interviews with men in different stages of pregnancy, childbirth, and the postpartum period were conducted. Through a grounded theory design, a novel four-stage theoretical model emerged that represents the journey to first-time fatherhood. These stages are beginning the journey, fatherhood in limbo, facing reality, and settling down. Participants suggested that achieving a new normality was the final stage where they finally felt located with a sense of mastery in their journey to fatherhood. The novel theoretical approach of addressing the process of men's transition allowed more complete access to their perspectives. Men's needs are different at every phase of the transition to fatherhood, and the use of these findings can help care providers in caring for every man according to the stage he is facing.