Unity has been underway for almost 200 years of its 500-year voyage, carrying over 20,000 people to a new home among the stars. The ship—built inside a hollowed-out asteroid—has had a relatively uneventful journey. Until now. Ian Leatherby is a power engineer researching a string of unexplained power outages. Miyuki Takata is a detective investigating a rash of unsolved thefts. They team up when they realize the two mysteries may be connected. Together, Miyuki and Ian race to uncover the secret plot that threatens the safety of Unity and everyone on board. Can they unmask the conspirators and stop their plan before it reaches its ultimate conclusion?