His father's last words, "You are not my biological child," plunged the silent contractor Chen Yuan into a whirlpool of lies for twenty years. Her biological mother, Lin Xiulan, had resisted for half her life and did not dare to recognize each other. Her adoptive father, Chen Guodong, died to reveal the truth. Her uncle, Chen Jianguo, took the opportunity to seize the birth, and private detective Su Wan secretly planned it. When the original records of the accident were dug out from under the ruins of the construction site, Chen Yuan finally understood: blood is not a bond, conscience is where it belongs. He chooses forgiveness and revenge.