With the Class of 1970 reunion coming up, some surprising characters appear. not only did Musso graduate then, but Larry's dad, Parker's dad, and the dads of his two best buds. The forerunner of Parker, Mr. Lewis was the resident prankster along with his buddies, and in their day perpetrated the ultimate prank. Now the only evidence of their identities in the prank are about to be revealed as the time capsule will be opened in front of the entire graduating class. Can Parker cover up the crime, or will his dad's legendary episode from years past cause Parker's downfall?