Allen and the No-life Gamers head to Rohzenheim to protect the elves! Luckily for them, Allen can do it all—healing, defending, and even attacking! He quickly comes up with a plan to push back against the Demon Lord Army's overwhelming numbers, but his services aren't free. He negotiates with the Sovereign of Spirits to receive a class promotion for the members of his party, then heads out to uphold his end of the bargain.

The battle will be a grisly one. Armed with a newly unlocked skill, Allen stands at the vanguard, ready to fight! For the first time, the No-life Gamers must face demons and a Demonic Deity! Can our protagonist attain victory over a god? And will his new skill prove useful in this hellish war?