The Gunsmith 450 Clint goes to the Oklahoma Indian Territory to help Belle Starr, at the behest of Roxy Doyle, Lady Gunsmith, who is friends with Belle. However, Roxy is unavailable to help, which is why she asked the Gunsmith to take her place. For this reason, Clint is in the Oklahoma Indian Territory when Belle Starr is shot. Because he feels he didn't do what Roxy asked him to do, he feels it is his responsibility to find out who shot Belle. In addition, he must keep Belle Starr from being shot again, and keep himself alive, at the same time.