It is the year 2219, and eighteen-year-old Sylvia Valentine lives on board the Ship Olympic, which has undertaken a mission to move humanity to the planet Alpha Centauri. The ship is divided into three classes of residents; Classes 1, 2 and 3. Sylvia lives amongst the most wealthy and powerful Class 1, her father an influential Commodore; but a growing resistance group amongst the Third Class known as The Solidarity threaten her way of life as she knows it... and possibly her very existence.