The Roar by, Emma Clayton

It is about a world where all animals have the plague, so the goverment built a metal wall around the world to keep out the animals. Ellie and Mika are twins. But, Ellie was kidnapped by Mal Gorman, and now everyone thinks she is dead, except for her brother Mika. The whole book is about how Mika enters in this Pod Flying game at an arcade with a girl named Audrey, where if you win the first round, then you get to go to the second round. if you win that round, then your familly wins a week vacation where the rich people spend their time. (in the book, the rich and poor are split up). one of the reasons why he entered the competition, is because he wants to find his sister, and his therapist had told him that there is where he might get some answers. -Ruby