U.S. Treasury agent Jack Wood is trying to find the source of counterfeit money appearing in Texas border towns when he suddenly disappears in El Paso. The U.S. deputy treasury director informs a select group of President Ulysses S. Grant's advisors of Wood's disappearance and of Mexico's possible involvement with the counterfeit money. South of El Paso, Mexican mercenaries assemble with orders to destroy the town, seize Dallas, and hold Texas...