Wally's the best escape artist at the zoo. Mr. Twiddles the zookeeper is determined to end Wally's wayward ways and hires sleepy-eyed watchdog Snoozer to keep an eye on Wally. Wally's creative efforts to escape from the zoo and spend a night on the town are thwarted by the watchdog.

M. Twiddles devient un chien de garde après que Wally ait tenté de quitter le zoo.