Factual programme. Ed and Oucho are travelling all over the country making inventions. They are trying to build the 'Amazopak', a back pack that hides stuff, controls a car and has a TV on it! Things appear to be going well, until Ed's brilliant backpack doesn't do what it's supposed to - not so brilliant after all.
As if that wasn't enough, Ed's forgotten all about the car and TV and Oucho isn't being any help at all! With the Big Big Cheese on their backs, will their general uselessness and lack of science know-how stop them from building the backpack in time?