A bumbling giant named O‘Reilly stumbles upon the little people, but he thinks they are leprechauns and offers to serve them. Steve thinks the giant could be dangerous, but Mark believes he could be useful and has Fitzhugh guide him along to fetch various materials and tools needed to fix the Spindrift. Meanwhile; a shady store detective named Krenko plots to frame O‘Reilly for pinching silver, but after learning there are little people, has other plans. This disrupts the Earthlings' repair efforts.