The sky in Xiacheng District is always gray, just like Mu Ziyu's life in the first twenty years.
On his twentieth birthday, his parents jumped off the building. It rained heavily that day, but it still didn't wash away the gray sky. He looked down from the rooftop and felt the urge to jump off.
But he remembered that he had not lived in Uptown yet, and had not seen the blue sky in Uptown.
So he escaped to the rooftop and prepared to bury his parents properly.
Then he met a man who smelled of alcohol. The man was wearing worn-out sandals and collapsed in the alley below his house.
Mission: Caring for children.