Long Wei, Lu Dashan and Ma Yue suddenly received an emergency call from Yata, who told Long Wei that she had learned about the Black Poppy Project! Long Wei and others reunited with Yata, who brought a girl named "Luna" to meet Long Wei. From the girl, Long Wei learned that she was a doctoral student in biology and had just escaped from a private medical experimental center in the north of Fuji Country. In the laboratory, a man named Dr. Haiya was the developer of the black poppy. The black element he developed, when added to drugs, would increase people's desire for drugs by hundreds of times, and then become crazy. The black element is a genetic toxin developed based on the principle of a mutation in the 538th base on the ABCC11 gene in the middle of chromosome 16. This genetic mutation is also the source of body odor. Among Chinese people, 95% of people have this type of genetic mutation, and 99% of people in the Central Plains such as North China. In other words, this toxin is a genetic weapon specifically targeting the Chinese! A few days ago, two mysterious people (Viper and Elk) came to the Medical Experiment Center. They told the doctor that Black Fox would start the Black Poppy Project ahead of schedule and asked the doctor to produce 2000 ml of black elements within a few days. They also offered to buy the formula map of black elements at a high price. Dr. Haiya agreed to sell the black elements but refused to sell the formula map. They left in a huff and agreed to deliver the goods within a few days. Long Wei couldn't help but take a breath. Yata made it clear that she was willing to continue to help Long Wei and work with them to capture Dr. Haiya and intercept the finished black elements and formula data from him. Dr. Haiya's private medical experiment center hired a large number of mercenaries to guard it and was heavily guarded. Several people from Long Wei pretended to be mercenaries, mixed into the medical center, occupied the monitoring room of the experimental center, and broke through the layers according to the laboratory location provided by Luna. Dr. Haiya fled from the secret passage with a box containing 2000 ml of black element liquid and formula data, and was intercepted by Long Wei and others. The battle was originally a great victory, but Yata suddenly turned the gun around! She handcuffed the three Dragon Guards and shot them under the surveillance of Black Fox. Then she took Dr. Haiya and the black element box into the car. It turned out that she had an agreement with Black Fox: to use the lives of the three blood wolves and Dr. Haiya, elements, and formula data in exchange for the freedom of her father, the former president of Fuji Country. Yata was full of apologies to the Dragon Guards, but she had no choice for her father. Yata saw Viper and Elk who came to take over, but she was disappointed. Viper and Elk did not bring his father, but killed Sister Mei and others, and took away Dr. Haiya and the box. Thanks to Sister Mei's protection, Yata escaped the pursuit! At a secret location, the three Dragon Guards gathered and waited for Yata to appear. It turns out that Yata didn't believe that Black Fox would release her father from the beginning. She had already informed Long Wei of the content of the negotiation between Black Fox and her. Long Wei decided to play along with the enemy. His goal was to determine Black Fox's hiding place, eliminate Black Fox, and rescue his father by acting out this scene. Long Wei ordered Ma Yue to track the signal with a computer. As early as the moment they captured Dr. Haiya, they shot a miniature satellite tracker into Dr. Haiya's body. The satellite signal kept moving and finally stopped at a secret base in the mountains, which should be the Black Fox's lair! In the secret base, Black Fox finally appeared (masked). He first took 2000 ml of black element concentrate and a computer containing the formula map from Dr. Haiya. Then he revealed his true colors and forced Dr. Haiya to open the computer file password and hand over the black element formula map to him. Dr. Haiya would rather die than tell him the file password and died of poison. Black Fox was very angry and ordered Milu to crack Dr. Haiya's file password immediately! In order to eliminate the opponent before the file is deciphered, Long Wei and his men only have twelve hours. At the Black Fox base, fierce fighting broke out again. Long Wei's three-man combat team quickly broke in and headed straight for the main building of the secret base. Finally, the Long Wei team broke through the defense line, killed Viper and Elk, and broke into the building. At this time, the computer had displayed that the password was cracked. Long Wei terminated the program just before the file was about to be sent. A violent explosion sounded, and the entire secret base turned to ashes. Long Wei, Lu Dashan, Ma Yue, and Yata survived, but no one was surprised. They lost the opportunity to capture Black Fox. ——The reconnaissance satellite images transmitted by Monkey showed that a speedboat had sailed out of the secret base and had gone far away. On the speedboat, Black Fox threw the phone in his hand into the sea. He slowly took off his mask. It turned out to be Yata's father, former President of Fuji Country Kun En!