A massacre along the Rio Grande draws Bishop and his SAINT team to the border with Mexico. Their investigation soon reveals a local conflict that challenges the Texan's moral compass while testing the Alliance's commitment to individual freedoms. Butter finds himself at the center of the dilemma, torn between a woman who desperately needs his help and the loyalty he feels toward Bishop and the team. Lured by a girl who has captured his heart, Butter becomes a pawn in a high stakes political game in which he is accused of murder and sentenced to death. Bishop and Terri must find a way to save their friend without pulling the Alliance into a conflict it cannot win.