After Caitlyn's life falls apart, can she trust her old racing competitors to help her build a new future? On a poisonous planet, humans and halions coexist in stacked city structures with only a high wall to push back the toxic jungle. But not all poison comes from outside. As an elite, Level 12 citizen and the daughter of a ruling family, Caitlyn has fought her entire life to not follow in her father's footsteps. When her secret identity as Sparks, a low-level disc-bike racer, is discovered, her father ships her off to the Academia for Planetary Alliance to turn her into a proper politician. Determined to toe the line until she can escape, Caitlyn's plans are once again thrown off balance when she meets her new classmates, Declan and twin brothers, Felix and Connor-three men who know her and are determined to become a team.