Have you ever wondered what’s inside the machines you use so often in your daily life? How does a lawn mower slice through the toughest grass without stalling? How come a pinball machine keeps players on their toes? And what makes a padlock almost unbreakable? Using ultra-realisitic 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.