Wallace and Gromit explore the mysteries behind man's fascination with flight, from 'homemade' space rockets in Manchester to jetpacks in the UK. There is also a look at some planes that unfortunately don't fly in another Contraption Countdown.

On location in the USA, we explore the most advanced flexible spacesuits being developed by NASA that are designed to allow wearers to perform cartwheels on Mars, and in Germany we look at the life of Gustav Mesmer, a man obsessed with flight, but whose inner inventor was locked inside his own imagination for years, and who finally got to realise his dreams of flying bicycles.

Finally, Wallace's Science Correspondent Jem Stansfield travels to California to investigate the connection between David Beckham and an eerie-looking spherical airship.

Wallace and Gromit experience the world through the five senses, exploring the fact and fiction behind invisibility cloaks, bomb-detecting bees and the top sensory inventions.

In London, scientists are creating prototype invisibility cloaks using metamaterials to bend light around objects, and we discover the science behind new technology allowing the blind to 'see' through taste using hi-tech sunglasses.

In Kentucky, USA we visit the small town where a local farmer invented wireless telephones over 100 years ago. Or did he? Finally in Tasmania, we meet our Inventor of the Week who, after being told it was impossible, invented and made his own unique prosthetic arm.