In the high-tech Imperial capital, Poseidon, the decadent ruling elites rush to build ark-ships to flee to the stars, leaving the impoverished masses to perish when the Sky Rock hits—with one exception. The Imperial Kassiopei Dynasty and the noble Great Houses hold Service Competitions to pick those best qualified to serve them.

Street-smart sixteen-year-old Semmi witnesses a mysterious vigilante known as the Man in the Niktos Cloak and accidentally discovers his secret identity. Powerful nobleman by day—deadly vigilante by night—and the anonymous star of the most popular and hottest adult drama on Atlantean video, Benaten Bisfuri is an irresistible man. To keep his secrets, Benaten must hire Semmi to work for him. Desperate for employment and frightened, she must accept the job. Soon, she's embroiled in Imperial Court politics and a complex plot to save the people who will be left behind—all while competing in the brutal Service Competitions to earn a coveted spot on an ark-ship. She also finds her fate entwined with the uncanny Imperial Princess Arlenari.

Before the Sky Rock strikes Earth—bringing about the Great Flood, reprising an Ice Age, and changing the face of the planet forever—Semmi must discover her own abilities to win a place for herself and her loved ones. A place on the Ark.