The backstory on Arkship Obsidian. Earth has been destroyed, the entire solar system turned to dust by a cataclysmic event known as the Fracture. Now, the last survivors of humanity live on vast arkships drifting through the Cluster, doing what they can to survive in a hostile ever-changing environment. Life on board the Ark Royal Obsidian is a quiet routine for Chief of the engine deck, Bran Colmen. That is until his family is kidnapped and he is forced to steal secrets about the vast arkship's engines by a covert intruder. As time runs out, Colmen finds himself trapped between saving his family and averting a war that could kill thousands.