The friendship of two working stiff railroad engineers is put to the test when one falls for the other’s wife.

The circuit judge lion delegates the job of trying the notorious bank bandit, Fowler Means, to Snagglepuss. Snag holds court in Loophole Mesa, a frontier town. After the prosecutor comes down with a case of lead poisoning -- from the bandit's bullet -- Snagglepuss has to take over his job.

Poor Major Minor is disgraced and kicked out of the Adventurer's Club because he has never captured Snagglepuss. The Major decides to use Snag's passion for acting against him, and he mounts a road show, which fools the mountain lion. Successful at last, the Major drives his captive directly to the Adventurer's Club stage, but Snagglepuss outwits him when he asks permission to do a farewell performance.