In a radical experiment, pioneering scientists from across Europe have come together to use new technology to explore what our world would look like if we could not tell lies. Three British contributors are rigged to make it impossible for them to lie undetected, and are challenged to live for a whole week without telling a single lie. This bold social experiment sets out to discover the role of deception in our lives, and to investigate the impact lying has on our mental state and the consequences of it for our relationships.