Officer Buckle knows more about safety than anyone in the town of Napville. But whenever he tries to share his safety tips, nobody listens. Until, that is, the Napville Police Department gets a police dog named Gloria.

Unbeknownst to Officer Buckle, Gloria has her own way of demonstrating safety tips--one that makes Napville sit up and take notice! Suddenly, everyone wants to hear Officer Buckle's safety speech. "And please," people say, "bring along that police dog."

When Officer Buckle discovers he's been upstaged, he vows to give up safety tips once and for all.

Can Gloria convince her friend to return to the job he loves, or is Napville about to have its worst accident ever?