OK…..Not quite sure what I saw there.
The first thing I noticed was the odd black grainy-shifty stuff. Whatever that is, it needs to be fixed. The second thing that I noticed was the nice animation. While the camera movement was a bit choppy, it wasn’t that bad. And the minifigure animation was quite good. The surprise was a unexpected, and executed very well. I would have left out the “Oh my!” at the end, but that’s just me.

It’s rare when an entry doesn’t use all of their time, but it still feels complete and whole. Good job.
By the way, when my younger brother was looking at the entries, he saw your name and commented that you must be Asian. He then got in a karate stance and said: “O-som!” in an odd Asian-ish accent.