what's happening
ここで何が起きてるのか知りたいな。
I want to know what's going on here.
何が起きてるのかわかってる?
Do you know what's going on?
責任者なら何が起きてるのか教えるべきよ
If you're the person in charge, you should explain what's going on.
— REC / レック (2007)
何が起きてるのか、察しはついてたさ。
I had a pretty good idea what was going on.
彼は何が起きてるのか、分かってなかったんだ。
He had no idea what was going on.