Taking a gap year before attending the Explorer Corps Academy, Siti Kassis accompanies her legendary father on a trip to the prize jewel in an Explorer's crown: Earth. Evacuated centuries before, humans now return to mankind's planet of origin to reclaim their birthright. But when Siti and her father's team land near the site of the last known scientific outpost, they find more than they bargained for.

Fresh from the mission to Earth, Siti Kassis, daughter of the "Hero of Darenti Four," enrolls in the Colonial Explorer Corps academy—the same academy where her father was the captain of the rev-ball team, and still holds flight records for the extreme piloting competitions. As the daughter of an honored alum, she's expected to lead the legacy students to victory in every training scenario and game. But Siti wants to prove her own worth. Shunned by the other legacies when she refuses to play by their unfair rules, she joins a band of misfits for her class' most arduous trial: Prime Survival Week. When Siti and her friends discover they've been dropped into a PSW with no rules and no end, will they figure out how to survive? Will they devise a plan to win?

She survived the academy, but did it prepare her for an alien world? Siti Kassis excelled at the Academy, earning honors and respect. She has one last cadet mission before she graduates, but it should be easy. She'll be the most junior member of an established Explorer Corps team landing on a partially explored planet. With decades of experience and the full support of the corps, what could go wrong? Then they encounter dangerous aliens, sabotage from within, and a deadly enemy at the gates. Siti must rely on her friends—and some of her enemies—to survive the final challenge.

Lieutenant Serenity "Siti" Kassis has built a name for herself and the beginning of a career with the Colonial Explorer Corps. But after five years on active duty, she's assigned to a new mission: the return to Darenti. Over a hundred years ago, her father discovered the first intelligent life in the galaxy, becoming the Hero of Darenti Four. Siti has lived in his shadow all her life, and now she's forced to follow in his footstep once again. But this time she's on her own. After being separated from her team, Siti must decide if she can trust the Darenti—and figure out what their goal is. Because if she doesn't, they could unleash a terrifying menace on the unsuspecting human race.