Mr. Men and Little Miss S02 E03 Mr. Clever's Invention

One day while Mr. Grumble was having tea at Little Miss Giggles' house, Mr. Clever arrived with a marvelous spacecraft invention. It represented that it will take them straight to Mars in several hours. On Mars they were all together looking for life, but while running from a Martian, it turned out to be PC Whistle the Policeman who explains they were just on a rubbish dump not far from Mr. Clever's house.