Eleven-year-old Zubair is a seventh son. This means a LOT of big brothers. But when Zubair's granny arrives from Pakistan and gives him a mysterious amulet, he discovers it means something else, too: he had inherited a new gift. the seventh sons in his family have the ability to time-travel. 

With his dad a shadow of his former self since the car accident, and his muma;ways tired and angry, Zubair has a genious idea. He'll use time-travel to fix things between them. 

But each trip comes at a cost. If he changes soemthing small in the past, it can have a huge effect on the future. And if he gets it wrong, the results could be devastating.