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 has inherited a gift. The seventh sons in his family have the ability to time-travel.

With his dad a shadow of his former self since his car accident, and his mum always tired and angry, Zubair has a genius idea. He’ll use time-travel to fix things between them.

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