I think someone entered my room last night or during my shower time stole the SD card from my transformer netbook. I just put it on the socket last night and I just kept it in my computer bag inside of the side bag. I did not take out my PCs when I was away from my accommodation. And the missing card should be either in the bags or in my bed room only. So, that strange thing happened like this way.
Anyway, this is the video from past few days.