The word "NK" means "Natural killer", which is one of the leukocyte (white blood cell) in human's body, specific in anticancer aspect. They are killing the human race and destroying the population. Will a young warrior heed his elder's advice to hold the fort in their land?
In our daily life, we see things and do things with our own ways, and sometimes our arrogance will block our mind from elder's advice, and things usually end up with disaster. But the elders who love us always stop things from getting worse and fix things just in time.
This film is a tribute from the director to his cancer-stricken auntie, to honor the aged and the wise.