Since time immemorial, the Spires have sheltered humanity, towering for miles over the mist-shrouded surface of the world. Captain Grimm commands the merchant ship Predator. Fiercely loyal to Spire Albion, he has taken their side in the cold war with Spire Aurora, disrupting the enemy’s shipping lines by attacking their cargo vessels. But when the Predator is severely damaged in combat, Grimm is offered a proposition from the Spirearch of Albion --- to join a team of agents on a vital mission in exchange for fully restoring Predator to its fighting glory.