A missing person case forces three girls from different walks of life to face life-altering choices, exposing the ups and downs of an ordinary family. The story intertwines the light and dark sides of the city—above ground and in the underground tunnels. As one girl navigates these challenges alone, she uncovers the truth, finds redemption, and moves toward a hopeful future.

Ren Yu ran for 1 season. No new episodes are scheduled.