Weedon has a toothache, but his regular dentist, Theodore Jenkins, has mysteriously vanished, and Weedon refuses to visit Painless Porter, the new dentist in town. White Fang finds Matt's lead dog, Buck, in the wild, and tries to teach him how to live with the wolf pack- but Buck is hard-pressed to adapt. Wendy learns that when patients are given laughing gas, Painless cleans out their pockets. Weedon, who will do anything for a story, decides to visit Painless' office, but his plan backfires, and Beauty takes Wendy and him prisoner, along with the kidnapped Theodore. They are rescued by an unlikely hero, Buck, and Sgt. Oakes hauls the hysterical Beauty and Painless to the woodpile after a laughing-gas canister explodes.