It looks like as the title might suggest, that they're going for a more serious and melancholy feel than their previous tracks "Energetic" or "Burn it Up". It also looks like all the members may be wearing the same necklace, which may signify something.

The boys will be coming back in November with a repackaged album, '1-1=0 (Nothing Without You)', so check out the images below and stay tuned for more until their full comeback on November 13th.