After years of fruitless prospecting, old Scissorbill Childers finally strikes it rich and decides to use his new-found wealth to open a bank to grubstake other prospectors.
Annie, Tagg and Lofty try to help a history buff who believes he has found a map that could lead to gold hidden by the Spanish explorer Coronado over in the early 1500s.
Annie and Lofty investigate when two outlaws hold-up the messenger carrying the Cattlemen's Association receipts to the bank.
An ex-convict recently released from prison is killed by outlaws before he can recover the gold he stole ten years earlier.