Have you ever wondered what’s inside the machines you use so often in your daily life? How does a pool table give you back the cue ball but hold on to to the colors? How does a gas-fired boiler turn cold water into hot in just five seconds? How can a simple shopping cart carry a load six times its own weight? Using ultra-realistic 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.