Tessa chose to stay home when her brother Ashby left for the stars, but has to question that decision when her position in the Fleet is threatened. Kip, a reluctant young apprentice, itches for change but doesn't know where to find it. Sawyer, a lost and lonely newcomer, is just looking for a place to belong. When a disaster rocks this already fragile community, these Exodans who still call the Fleet their home can no longer avoid the inescapable question: What is the purpose of a ship that has reached its destination?