Icebreaker
Petrel is an outcast on the ancient ship, an icebreaker, that has been following the same course for 300 years. In that time, the ship’s crew has broken into three warring tribes. Everyone has a tribe except Petrel, who lives in the ship’s darkest corners, and trusts no one except two large gray rats – that is, until a mysterious boy is discovered on an iceberg, and brought onto the ship.