When their anniversary dinner is a flop and their love life seems to lack luster, Homer and Marge try to spice it up, first by traveling to a bed & breakfast. Meanwhile, Lisa and Bart use Grampa's mine detector to find treasure and they find an alternate ending to "Casablanca." Homer and Marge discover that the fear of getting caught is the spice they need until they are caught bearing it all.

When Mega Lo Mart starts selling propane, Strickland Propane can't compete with their prices, and Hank loses his job. He winds up working in the propane department at Mega Lo Mart, under the supervision of Luanne's boyfriend Buckley. Hank and other Mega Lo Mart employees decide to protest the way the company destroys small businesses, by disrupting a concert by the company spokesman, Chuck Mangione. Meanwhile, Luanne, who wanted Buckley to give her the job that he gave to Hank, tells Buckley she's breaking up with him. And Hank, Luanne and Buckley are the only people in the Mega Lo Mart when Hank notices a leak...

The Cigarette-Smoking Man returns as Mulder investigates the attempted assassination of a young boy with psychic powers who may be the proof that he has looked for all his life.