Overall, 3/5 : 7/10
The BGM and sound's were fine. nothing wrong there, however the distorted voices and average voice acting in most parts kinda let you down a bit.
On the animation side of the flash, It was okay, A bit heavy on the gradience for my liking but all in all, it was okay...
The plot was quite clever indeed, however you failed to disclose any information about any of the characters, why these two people from different time zones have been abducted and why they are 'chained' to the wall.
The part about the 'Alien' being just an evolved human was really clever, and the way you explained it was really well done.
Final Summation, A little more time and effort will really project your future flashes much better.
If this is the life for you then I strongly suggest that you lash out and buy a decent microphone, practice voice acting and try to get help/collaborate with others who have done the same thing.
You certainly have the making of a good animator, you just need to keep at it.
Alright for the front page.