This documentary examines the unique warrior culture of the United States Marine Corps. The corps' "Warrior Ethos" is ingrained into Marines from their earliest training. The program focuses on this training and considers what it takes to become and to be a Marine. The program also examines the strong bonds between Marines and their devotion to the corps, and explores some of the key moments in Marine Corps history.

With significant access to Marine Corps training facilities, including boot camp at Parris Island, South Carolina, and officer candidate school at Quantico, Virginia, Twentynine Palms, California, training facility and the Marine Corps Martial Arts program, the documentary reveals critical aspects of Marine development. Marine Corps history is woven throughout the program, which includes an interview with a surviving member of the Mainer Raiders of World War II. The documentary also profiles the new Marine Corps Museum in Quantico.