The deeper the dungeon, the darker the secrets.

Jay Morgan didn't ask to be the dungeon's chosen King Killer. He just wanted to keep his friends alive, pay off a life-debt or two, and maybe—maybe—figure out how to keep the women in his party from murdering each other over breakfast. But fate (and a snarky, sapient dungeon AI with questionable ethics) has bigger plans. Back in the Ice Dungeon and reeling from recent battles, Jay is promoted from reluctant delver to reluctant revolutionary. As Alphonse Howler's second-in-command, he's tasked with helping the Black Howl expose King Wenshire's agents... and accidentally ends up leading an army.

Kalasi, once their silent captive, wakes with vengeance in her veins and eyes like a woman who's seen the end of the world. She doesn't talk much, but she fights like a demoness. And for reasons unknown, she really, really seems to like Jay. Or, judging by the hungry look in her eyes, she might just want to eat him. Meanwhile, Nova has a plan to escape the dungeon once and for all: by transferring her sentience into Raina's lingering spirit and abandoning the Ice Dungeon forever. There's just one problem—Jay doesn't trust her anymore. Not enough to finish the mechanical body she needs to be free.

To earn his faith, Nova must do something unthinkable. As conspiracies unravel, a plan takes shape. With Alphonse's help, Jay and his girls set a trap to lure the King into a confrontation. Jay never wanted to lead a rebellion, and he sure as hell never planned to start a war. But the dungeon has chosen its King Killer, and this time, it won't take no for an answer.