With the golem situation resolved and the slums safe, an exhausted Zenos decides to take a well-earned break and go on vacation to the hot spring town of Flamme. But with the demi-human leaders, Krishna, Lily, and even Carmilla tagging along, his attempt at relaxation unsurprisingly doesn't turn out exactly as he'd hoped.

Meanwhile, volunteer healers enter the slums to offer aid in the wake of the golem attack. But when they find no injured to assist, certain individuals in high places begin to suspect something is amiss—and, coincidentally, one of them happens to get sent out to Flamme on healing duty.

Will Zenos be able to maintain his place in the shadows? Or will his brilliance be revealed, kick-starting a whole new adventure...?