"It's A Small World", Uncle Martin tags along with Tim to cover the opening of a rare jewel display at the museum. Martin discovers that it's not really a rare jewel, but highly compressed fuel - from Mars! He convinces Tim editor, Mr. Burns, to send the pair to Africa, for "the scoop of the century!" There, they discover Uncle Martin's Martian uncle, Barton, who has come to Earth to escape the crowds on Mars!
Later, it's hijinks for Tim as he and Uncle Martin enjoy a vacation on the beach in Florida! "Sighted! Green Monster", Uncle Martin grows a Martian picnic on the beach that turns Tim green!
— Description from Comic Vine community (comicvine.gamespot.com).