The Neath changes. The Neath welcomes. The Neath gives opportunities to the willful and crafty and unscrupulous. This is the story of Iori Sei - and the story of the Neath and its gallivanting with the Gunpla culture. And, of course, as is all things in the Neath, what lies beyond the surface: "Field Sixteen. Sunless Sea."

(No previous knowledge of Sunless Sea required). The Spartoi crew end up in an underground sea, devoid of Sun and logic. This is their eldritch adventure of returning home. (The air is filled with Salt. A Fake Sun plots while an eaten corpse cackles. Golden eyes are everywhere.) The Unterzee harbors many secrets and none of them are pleasant.

Dry Bowser explores the Zee as he wonders how it's possible to see within an ocean without a sun shining on it.

This story is about the manager of an inn in Japan being brought down to London and his adventures and actions in both Fallen London and travels on the Unter forr better or worse as he deals with the terrors and trials of the Unterzee.