Shen and Rek'sai

Ok quick question, didn't see this on teh Q&A, which means it either isn't there or I'm blind...

Anyways quick question involving Shen and Rek'sai, namely if Shen ults her during her ult, when his channel finishes does he appear where she started, where she ends, or at the point she is at while still underground?

I'm kinda hoping for the third one cause that would lead to some crazy drive by surprise Shen ganks