ENEMIES CHANGE, MUCH STRONG, VERY WOW!
You find yourself on a desolated island oh my, but not so desolated if you find the enemies here are strong as heck.
Anyways just head south, cross the bridge, then keep going south until you see a watch tower type icon. Enter that to enter Apostle Headquarters. Level up, to at least 48 here.
Go a bit forward to trigger a scene. (Oh, those hot-blooded Vargs.)
The Chant master is near the Sheep.
Only an item shop here so restock before heading to the Dawn Spire.