Éstrella is the 'perfect' society: an immaculate, sanitised, hyper-connected environment where everything is channelled through the digital medium. There is no dirt, no pain, no disease and no natural world. Feelings like boredom are frowned upon and discouraged. Alara is dropped down to London Under and into a new-old world that bewilders and disorientates her. How will she survive in a society where noise, dirt and sometimes pain are everyday experiences, and where food is not synthetic and tastes real? Will she accomplish her mission? Who can she trust? How will she get back to her family and her worry-free life in Éstrella? This fast-paced and thrilling story set in a fictional yet believable future explores important themes and asks some big questions about where our society could be heading.