After her stagecoach is ambushed, a woman is tasked with holding a dangerous outlaw captive and must survive the day when the bandit’s gang tries to free him.

Agent Matt Graver teams up with operative Alejandro Gillick to prevent Mexican drug cartels from smuggling terrorists across the United States border.

Based on a true story, this riveting western follows a headstrong New York widow as she journeys west to meet Sioux chief Sitting Bull, facing off with an army officer intent on war with Native Americans.