We cannot see the waves, we cannot hear them, we cannot touch them, but they are all around us, invading the air, irradiating our body and the environment. An Invisible Threat looks at the relationship between microwave technology and health, investigating the conflicts of interest among industry representatives, politicians, scientists and consumers that leave us unprotected to the effects of radiation. Microwave effects are currently being analysed and debated in almost all developed countries. The question is, are we prepared for the answers.