I've already watched it and now that I found it subbed, I thought I would share. It's quite interesting and funny!
SNSD’s message on JPN LINE:
To those who watched ‘Another Sky’, thank you
We were able to have a very enjoyable filming in Korea after a long time
The song that played at the end is called ‘Indestructible’, and it’s a new song in our best album, ‘THE BEST’.
We sang our honest feelings with these lyrics, and we really love this ballad that’s like a treasure.
Please listen to it
**skipped all emoticons and links ^^;
Translation by RedSunsetXIII
Mods, I hope the way I gave credit is okay?!