Vidarian Rulorat, a captain without a ship, faces the consequences of opening the gate between worlds. Elemental magic is awakening across the planet after centuries of dormancy, bringing with it magically powered wonders including flying ships and ancient automata. After decades of peace, empires leap into war over long-disputed territory as their technologies shift—and on top of it all, Ariadel, Vidarian's one great love, isn't speaking to him. Called into service by the desperate young emperor of Alorea, Vidarian must lead skyships in a war against the neighboring southern empire, train the demoralized imperial Sky Knights to ride beasts that now shapeshift, master his own amplified elemental magic, and win back Ariadel—all without losing his mind.
Compounding his task is a political minefield laid by the Alorean Import Company, which may or may not be fomenting war across the world, and a shapeshifter that bonds to Vidarian during his early attempts to subdue the rogue birdlike seridi. And, as always, the Starhunter, goddess of chaos, is never far from Vidarian's heels, inexorably guiding him toward her own concern: the lance of earth and sky.