Because of an accident, Zhi Li lost her father who was her one and only family. Since then, Zhi Li often wakes up in the middle of her nightmare in which she is drowning. The suffocation close to death made her at loss. Even though Zhi Li is alone now, she’s trying hard to survive that even the nightmares and loneliness can’t stop her. On a raining morning, Zhi Li met a girl with a black umbrella, who walked into her lonely life and since then their fate got interwined.