It used to be the most wonderful time of the year, but for years Christmas has been taken over by Winterzone. All the things that made Christmas special are gone: the human connection, the baubles passed down through generations, even the rubbish cracker jokes. Instead, Christmas is run by robots, while 3D holograms of Santa Claus called Santavatars check if you've been naughty or nice -- and on Christmas Eve, all of the presents are delivered by ZoneDrones instead of Santa's reindeer! But when they stumble on a curious clue, eleven-year-old Etta and her friend Monty find themselves thrown into a fight to bring back Christmas. Racing against time and against the might of Winterzone, they must find the real Santa -- before the true meaning of the festive season is lost forever...