In Across the Universe by Beth Revis, Amy leaves all she’s ever known behind and is cryogenically frozen to follow her parents as they set out on a 300-year journey to colonize a new planet only to be awakened early and alone.
Elder, the designated next leader of the ship’s crew, has been born years ahead of the rest of his generation, he is alone in a society with no room for difference. He admits to liking a little chaos, so how could he resist a girl his own age who appears in every way different from all he’s ever known.
But being different in an enclosed world means being an outcast, a challenge to the existing order of things, and perhaps even a threat. Eldest, the current leader and Elder’s mentor, states that the greatest threat to the ship is mutiny and the first cause of discord is difference. The other causes in his mind are lack of a strong central leader and individual thought. But is absolute control really the same as strong leadership? On a ship where every function is based on lies, Amy’s difference and Elder’s tendency toward independent thought threaten both their lives.
Meanwhile, someone is killing the frozen colonists.