An ex-major forces a scientist to develop a invisibility formula, with which he plans to create an invisible army and sell it to the highest bidder. However there are side effects to the formula.
A fire worshipping cult of Indian is disbanded by a man, his elephant and tiger.
A wildcat oil outfit is seeking to take over the ranch belonging to Pop Martin and his son Bob and daughter Helen. Bob sends his ex-army pals a "stay-way" message, which brings them on the double. The WW II vets use their jeeps, first for a cattle roundup, and then to round up the gang of crooks, including the crooked family-lawyer Thatcher, brains of the gang.
