The astounding new novel from the bestselling and Costa-shortlisted author of Time Travelling with a Hamster, this is a story for everyone of ten and older who loves adventure, laughs and tears."One of my favourite middle-grade writers" Kiran Millwood Hargrave, author of The Girl of Ink and StarsWhen eleven-year-old Georgie befriends an eccentric retired scientist, she becomes the test subject for a thrilling new experiment: a virtual-reality 3D version of the future.But then a deadly disease threatens the life of every dog in the country and Georgie`s beloved dog, Mr Mash, gets sick. And that`s only the start of her troubles.Soon, Georgie and Mr Mash must embark on a desperate quest: to save every dog on earth, and maybe even all of humanity …… without actually leaving the room.An extraordinary quest with the biggest stakes of all, and a huge idea at its heart, this is time travel - but not as you know it.