Lamont has been seeing Janet for some time now and he has decided to pop the question. Lamont tells Fred of his plans and he is happy for him. Unfortunately, Fred also discovers after the wedding that the couple does not want to live with Fred.

While Fred is babysitting his soon-to-be grandson, Roger helps a customer and sells him some junk including three medals. After Fred learns of Roger's sale he envisions a story about just how he got those medals. Fred's story has him as a Patton like character fighting during World War II and battling espionage.

Three jewel thieves try and find a way to smuggle some expensive diamonds from Hawaii to L.A. That is where Fred and Lamont come in. Fred goes to Hawaii to attend a Junkmen of America convention. The crooks then plan to sneak the jewels on Fred so that he can take them to L.A. without knowing anything about it.

During a mishap at the airport Fred accidentally misplaces the suitcase with the diamonds and the crooks start chasing Lamont and him all over Hawaii, trying to get them back. Meanwhile, the cops close on in, but not before guns are drawn on Fred and Lamont as the crooks trap them on a boat.

Esther has stopped by the Sanford residence to talk Fred into singing for a talent show. Grady is all set to be in the show with a magic act and for his most daring trick ever, he handcuffs Fred and Esther together. The only problem is that he can't understand how to get the two out of this dilemma because the directions for escaping the trick are written in Chinese.

Lamont and his fiancee, Janet are just one step away from the alter. However, a kink is put into their plans when after her wedding shower, her ex-husband John shows up. Meanwhile, Lamont has been having pre-wedding jitters and this just adds to them and Janet finds herself dealing with old feelings she thought had died long ago.