Happy go-lucky teen Billy Duncan discovers an otherworldly laser gun in the southern California desert, making him the target of a pair of aliens who had recently executed its previous owner.

Jed Clampett's swamp is loaded with oil. When a wildcatter discovers the huge pool, Jed sells his land to the O.K. Oil Company and at the urging of cousin Pearl, moves his family to a 35-room mansion in Beverly Hills, California.

The cases of master criminal defense attorney Perry Mason and his staff who handled the most difficult of cases in the aid of the innocent.