On the trail of the Shannon gang, Marshal Lincoln Hawk learns that they have already been killed. Believing that the dead outlaws have been incorrectly identified he continues on the owlhoot trail. He finds the gang still very much alive at the Mission San Juan, preparing to claim a stash of Mexican gold. Whilst the gang fiercely protect their alibi, no help is forthcoming from the peaceful mission padres. As Lincoln confronts an army of gun-toting raiders can he hold his own?