Have you ever wondered what’s inside the machines you use so often in your daily life? How does a subway ticket barrier survive the rush hour crush? What keeps a refrigerator cool…even in a heat wave? And what gives the electric guitar its distinctive sound? Using immersive CGI animation, this episode ‘explodes open’ everyday machines into their individual parts, to reveal their secret workings. Combined with stunning footage from the factories where these objects are designed, built and tested, this compelling program uncovers the mysteries of machines and how they work.