
Currently it seems unlinked to any plot waves, however, this may change at any time. It gives 3,000 NP per victory and at least two new prizes, one of which is a new weapon.
Additionally during the last week we saw another new unrelated weapon released: a new Brightvale Scroll.
Update:The opponent and connected hospital shift is now available in the plot, fighting it directly in the dome appears to award no plot points