With Antarcticite unable to find Phos's missing arms, Kongō instructs them to go to the Chord Shore where Lustrous are born for replacement material. Phos is given a gold arm as an intended temporary replacement, but it starts to grow out of control and engulfs them just as more Lunarians appear. With Kongō held up by another group of Lunarians, Antarcticite is forced to fight alone against a rare Lunarian, only to be shattered by a surprise attack when their guard is dropped...