Nine years ago, Wu Yang carved "W&L" on the rooftop of Bicheng No. 1 Middle School, turned around and hid at the border to become an undercover anti-narcotics agent. Reporter Lin Nan uses reports to record the stories of anti-drug heroes, and waits to guard a person who has no return date. The moment he said "good night", she finally understood the weight of those two words. This is a long farewell about guarding, waiting and the south wind - the wind will always blow, and those who remember them will always be there.
Intention: In the dark place where no one knows, someone protects the lights of thousands of homes with his life; in the long farewell, someone uses his memory to make this protection never extinguished. The south wind never stops, good night always comes.