A helpless father strives to find the killer of his son. A drama reveals the social status of those unprivileged people and their struggles to make a living and fights for justices in China today.

Inspired by real social events, this is a drama reflects social status for those ordinary and unprivileged people in China today. An 8 years old boy from an ordinary family was killed in a car accident, the boy's father can't get enough help from the police, so the helpless father decides to find the killer on his own, who will be confronted with unexpected difficulties in his journey to fulfill his promise for his son. A drama reveals the social status of those unprivileged people and their struggles to make a living and fights for justices in China today.—Anonymous