Andy and Barney reminisce about old flames and decide to throw a class reunion. When the big night finally comes, they both find they have a lot to learn about how much things have -- and have not -- changed.
Andy decides to take a vacation in the mountains and leaves Barney to guard a prisoner the state police have brought in. Inevitably, the prisoner escapes Barney's grasp and flees into the mountains -- the very same mountains Andy is vacationing in.
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.