Following a strange call coming from the region known as Desolation, Iterna sends a team to find out its source. Ratcatcher and Augustus Rho, two explorators from Iterna, were tasked with ensuring the safety of specialists and escorting them to the source of this disturbance. However, their mission goes awry when the elder of the Bento Tribe and the monstrous Mother, the ruler of the Desolation, both end up chasing after them.

Can the team reach its goal safely, and will they ever get answers to just who exactly they are escorting and why?