José de la Luz Sáenz (Luz) was born in the United States, and often faced prejudice because of his Mexican heritage. When World War I broke out, Luz joined the army, however, he found that prejudice followed him even to war. Upon his return to Texas, he joined forces with other Mexican American veterans to create the League of United Latin American Citizens (LULAC), which today is the largest and oldest Latino civil rights organization. Using his signature illustration style and Luz's diary entries from the war, Tonatiuh tells the story of a Mexican American war hero and his fight for equality.