Hoping to impress Wally's friends, Beaver (Jerry Mathers) spins a tall tale about a legendary Indian battle that he claims occurred in a vacant lot across the street from his house. "Prove it, Beaver!" challenges the skeptical Eddie Haskell (Ken Osmond), who further corners Beaver into making a hefty wager on whether his story is fact or fiction. In desperation, Beaver persuades Wally (Tony Dow) to help him "salt" the vacant lot with a lot of phony Native American artifacts -- and in the process, the boys stumble across what appears to be an extremely valuable find! ~ Hal Erickson, Rovi