Sooty receives a letter from his Cousin Scampi but he's not best pleased he's coming to stay. Matthew finds out how naughty Scampi is after he arrives as he throws a cricket ball through the window, ties Matthew's shoelaces together so Matthew falls over, squirts Sooty with a water pistol and pours salt in Matthew's tea, Later Scampi puts cream cakes in Sweep and Soo's faces and nails the bathroom door shut so Sooty, Sweep and Soo can't escape and finally Matthew falls through a chair Scampi's sawed one of the legs off. Matthew, Sooty and Sweep chase after Scampi but they slip over a banana peels and fall into some hay. Then Matthew feels sad and wants Scampi to return as they can't find him. They receive a tin of chocolates at the door with a note from Little Cousin Scampi inside saying sorry for being so naughty and Scampi pops out. Matthew sings "Blame It On Scampi".