A UK TV production company are recording an entertainment "reality" show based on hacking gadgets. To be honest, it has all been done before by other shows.
It is set in a fake "shop" where they get (mostly fake) customers that want "the best camera" or whatever, which provides the show with an excuse to do a comparative camera review.
Another set of (fake) customers come in and request something like a fish tank that turns around to reveal a big television, which your people get the task of making.
I think that about covers it. Despite them saying Mythbusters a lot, it seems to be absolutely NOTHING like Mythbusters. I would love to go along, except I hate London, the competition would be fearsome, I am too old / wrong sex / not whacky enough. And I hate seeing myself in a mirror, never mind on TV.