The Fallen are the children born affected by the Drakon, otherworldly beasts that arrived on a meteor and devastated Rosya in a decades-long war. Now, as the nation heals and moves forward, a second conflict looms. This time the enemy is not the Drakon, but the Fallen, and the trouble is they look human.

Lena, once a marksman, was demoted after shooting her training instructor and now serves as a laundress at Bunker 47. Though the position isn’t the career she’d hoped for, she finds peace in its routine... until she tries to help a friend and finds herself owing a favor to Captain Arkhimov.

The captain is tall, imposing, a celebrated war hero, and a stickler for rules—everything Lena is not. But when she ends up on a mission with him, she’s excited nonetheless.

The mission had been simple: go check on Bunker 17, which has gone dark. But when the task turns lethal and the bodies begin to pile up, Lena learns the captain is not who he claims.