When Gu Tingchuan traveled to a mining area in South Africa to discuss business, he accidentally discovered a suffering girl with a crescent birthmark on the sole of her foot, which highly matched his daughter's childhood characteristics. After returning to China, he investigated in depth, uncovering the truth that his daughter was swapped three years ago by her best friend and boyfriend together, with her true self trapped in a foreign mining area. Gu Tingchuan rescued his daughter with all his might, making the evildoers receive the punishment they deserved. In the end, his daughter recovered and transformed, establishing a foundation to help more people in adversity.