'It's 2027 and the human race is dying. Plants, animals and humans have been infected by spores from space and become part of a vast alien intelligence.
'When 16-year-old Callie discovers her little sister Gracie has been infected, she flees with Gracie to the Zone to avoid termination by the ruthless officers of Quarantine. What Callie finds in the Zone will alter her irrevocably, and send her on a journey to the stars and beyond.'
Source: Publisher's blurb.
'Callie is deep in the Zone - exposed, broken and alone. Without her little sister Gracie. Without Matt, the boy she loves. But when she stumbles upon a secret - hidden deep within herself - she realises that she holds the key to defeating the Change. But the Change know this too and they will stop at nothing to capture her. Fleeing from the officers of Quarantine, and the pervasive Change, Callie finds refuge in the unlikeliest of places. Only to find that she is in more danger than ever before.' (Source: Publisher's blurb)