In the year 2089, an alien race stalks the land in towering machines known as Tripods. They have taken over the earth and enslaved mankind with a mind-controlling device, ceremoniously implanted at adolescence. Will Parker, desperate to escape this ritual, leaves the village with his cousin, Henry and attempts to link up with the human resistance movement.

Follows the eccentric Bagthorpe family – ineffective advice columnist Laura, frustrated and emotionless comedy writer Henry, Scrabble cheating Grandma, 16-year-old electronics whizz and tennis champion William, artistic 14-year-old Tess, and twelve-year-old 'ordinary' Jack, who decides to train their mongrel dog Zero into a super dog.