Lum is still trying to keep Abner away from the store by having go on deliveries. It’s all to prevent him from learning about the exterminator, and the expected fate of Clyde the mouse. Abner begins to feel that Lum doesn’t like him anymore, and wants to get rid of him.
Coming face to face with Doctor Roller, Abner frets as the exterminator enters the store, hoping to claim victory over the mouse. Will Clyde outsmart Dr Roller, and be cause for Abner to celebrate? Will the exterminator call out his big guns?
With a little sabotage from Abner to Doctor Rollers pplan, he might create more problems than the little mouse would do on his own.