The four, tough Lawson boys ride into Boulder Halt, desperate to raise cash to save brother number five, in jail in Austin. With six-guns blazing, they storm Frank Warren's bank and burst out with a gunny-sack of cash - but the price is Tom Lawson is gunned down, young Buck Lawson is taken and Frank Warren's daughter takes two bullets in the chest. Adam and Owen make it out of town with the cash. Adam goes to Austin, and Owen returns to Boulder Halt, determined to rescue Buck...