Requires completion of Cyrus’ Fourth Chapter to unlock. You will find Princess Mary, one of Cyrus’ students, in Rippletide, a little west of the tavern. She has come to Rippletide to meet with Professor Paul, someone who taught her when she was younger. Something goes awry, though, as the ship Paul was on went down, so it’s up to you to find him. Before setting off, you will need either Primrose or Ophilia in your active party. You’re heading to a dungeon called Undertow Cove, which is located in North Rippletide Coast.

Exit Rippletide and head north into North Rippletide Coast. Follow the trail north a little bit until you see a trail off to your right, with the entrance to Undertow Cove behind in the back of the rock formation here. Professor Paul can be found on the western side of this dungeon, so keep heading in that direction until you spot him towards the southwestern corner. Use Guide or Allure on him, then return to the Princess in Rippletide. Speak to her with the Professor behind you to finish this quest.