Meng Qi, the former "Shadow Wolf" of the underground world, retired to a small southern town to work as a veterinarian, just wanting to sleep in peace. After Yuye rescued the retired military dog Lei Ting, he unexpectedly revealed the secret of the "0719 Mission" that year, and the plots of his enemies Black Crow and Shen Yan followed one after another. Ex-girlfriend Lin Wan brought her son Xiaoshu (actually Meng Qi's son) to the house to seek help. In order to protect his family and pay homage to his fallen comrades, Meng Qi regained his strength and joined hands with Lei Ting and his old troops to start a bloody battle in the city, settle old accounts, and protect the hard-won world of fireworks.
