Don't click on that file!
The video starts on the desktop of the video's creator, which is not a genuine copy of Windows and has a black screen. The cursor then hovers over a seemingly empty file that reads "Do not click on that file!" and clicks it anyway, after which the file is opened to show another one in it that reads "I can't believe you clicked on that file!". Nonetheless, the cursor also clicks on that file and encounters yet another file titled "Stay away! Turn back!", which it also clicks. A fourth file is then shown, reading "I'm warning you!", but the cursor still disobeys its warning and clicks on it too, finding another file that reads "Don't even think about it!". Once again, the cursor does not heed that warning and clicks on it as well, finding yet another file that reads "I swear, you'll regret it!". That file gets clicked on too, showing a picture file that reads "Now you're in REALLY big trouble, bud!", but the cursor still clicks it.
The file is then opened, revealed to be nothing but pitch-black, but then the girl's scary face from the video, "Scarier Faces", pops up in the image viewer with the same scream from Scary Tic-Tac-Toe.
NOTE: The following video contains a screamer!