Colt Horn was born on a pioneer trail to Scottish parents seeking new land they could call their own. But at the age of fifteen, he finds his parents murdered and is set adrift on the dangerous mission of vengeance. He grows to manhood surviving battles, hardships, and struggles, eventually becoming the owner of a large ranch. When he meets Liz Hanes, he wants to marry her and settle down. But none of his dreams can be realized until his parents' murderers are brought to justice. Colt learns that the man who killed his parents and is now leader of the Brazos River Marauders, wants him dead or alive and has posted a large bounty on his head. The attacks on neighboring ranches and on his life provoke him to leave his ranch and work full-time in an effort to eliminate the lawlessness in his valley. He will, at last, bring the leader of the Brazos River Marauders to justice-or die trying. Plenty of action brings the Old West to life in this tale filled with cowboys, love, revenge, and ultimately, redemption.