No other group of animals is as large, no other animals as colourful and diverse as beetles. The film ‘The Fabulous Insects – Beetles’ explains how they were able to become so numerous and successful – thanks to a unique trick of evolution. An incredible 350,000 species of beetles live on our planet Earth, far more than any other group of insects. All these beetle species look different and have very different ways of life. But what is the secret of their success?