In the TV series, O 'Kexin is the daughter of Mr. O, the boss of drug dealers. She and her mother were put in France by Mr. Ou since childhood and have been living abroad. This time, she suddenly returned to China. Because of a mistake, she didn't know Mu Qing, who was the undercover drug dealer.

Rong Yu lost her memory, and now she is the only daughter of Mr. Ou, a drug Lord. The real O 'Kexin is dead, and now O 'Kexin is the glory of amnesia.

The reason why Rong Yu became Ou Kexin:

Oxin was hit by an explosion three years ago. He was killed in the explosion. The police received the secret information of Oxin's death and thought it was a very good opportunity, so they adopted the plan of "changing civet cats for princes", replacing the Rong Yu who was also injured and disfigured in the explosion with a new look, replacing Oxin, and then returning to Mr. Ou to steal the information.