mavrickthe

So, I'm in Chapter 7 and when I talk to Farha about the sub, it tells me to return to Tesla's Villa - but when I go back there the building is totally empty, and I have no way to progress the story. Am I going to have to restart or did I miss something? The quest log is on step 29 and says that Tesla's Villa is in the Mynori Sea for some reason, if that gives more information.