A Hole in the Sky

"Hazel's family live a simple life in their village. Just one of the communities on a vast generation ship on a centuries long journey to a new world. 500 years ago the machines stopped working and life since then has been frugal. But everyone plays their part. And when you reach 65 you are recycled - it's only fair; you can't work anymore and your resources are needed.
But not everyone is happy. Hazel encounters the Cheaters, a group who refuse to die for the ship. They have discovered the terrifying lie at the core of life on the ship and they will fight for the truth and for the lives of everyone.
Hazel has a choice to make..."