John Wayne goes up against a nasty vice lord in this, his second Western under the new Republic Pictures banner. Hired against his father's wishes to lead a wagon train, John Dawson (Wayne) at first battles then befriends the outlaw Kit (Al Bridge) and his gang, whom he supplies with food. The friendship comes in handy back in Frontier, OK, where Ace Holmes (Warner P. Richmond) has been terrorizing the citizenry in general and John's father, Milt (Sam Flint), in particular. When the latter is killed, John takes on the responsibility of sheriff, deputizes Kit and his men, and together they clean up the town. Filmed at Lone Pine, CA, and using plenty of stock footage from Ken Maynard's silent era The Red Raiders (1927), The New Frontier was directed by editor Carl Pierson.