Centuries after the Marian Empire's brutal conquest, the Legion of Pneumos lurks behind the seat of power in Loren, preserving order across worlds by battling the chaos within them-even at the cost of oppression. As the newest Legionnaire, seventeen-year-old Keira Altman has spent the past year perfecting the art of pneumonancy, a magic that feeds on the power of chaos to bring order. Divided by worlds and desperate to return home, Keira grapples with the demands of training as a legionnaire, wielding a power few can harness, and many will do anything to stop. When word arrives that the Regio of Loren lies on his deathbed and a rebel uprising threatens the closely guarded peace, Keira's new world begins to crumble. With the help of Danny, her grounder and best friend, she must escort the young and feckless prince across dangerous borders to ensure a peaceful succession. Yet startling attacks uncover deep conspiracies and painful betrayals. Surrounded by enemies, they must fight not only for the realm, but for their very lives. Faced with the decision to either break her oath or ignore the persecution of the people, Keira's choice will decide her fate and forever change the future of worlds. Chaos Looming is the first book in the Legion of Pneumos series.