All of Mayberry turns out to welcome a truck carrying gold to Fort Knox as it passes through town. When Barney sneaks a closer look at the loot, he sees that there may not be as much to celebrate as everyone thought.

After Barney sees Andy and Helen kissing in a jewelery store, he becomes convinced they are secretly engaged and decides to throw a surprise engagement party, much to the chagrin of the un-engaged Andy and Helen.