小学生张蚂蚱（刘韫涛）居住在附近公安警犬训练基地，偶然窥视着警犬的训练，深深 loves a cunning and ferocious wolfdog named "Black Panther". Along with his buddy, they dream of breeding it with their pet dog, the tiger-like "Mountain Lion". However, during duty, Black Panther meets an untimely demise. Mountain Lion gives birth to two cubs, "Princess" and "Wolf Fang", whom Bee considers invaluable treasures as they grow older.
Summer vacation arrives, and Bee takes the two wolfdogs to the city to meet his sister, Zhang Jasmine (石荣), with plans to register them as pets simultaneously. On a public bus, a ticket collector steals money from a passenger and hides it in Bee's backpack. Suspecting foul play, Jasmine questions Bee relentlessly but fails to extract the truth, using the money for herself without Bee's knowledge. Shortly after, Jasmine encounters misfortune when she is kidnapped by the head of a robbery gang, Duan Fei (刘廷尧). In search of his sister, Bee enlists the help of the wolfdogs, who prove indispensable throughout his perilous journey. Unbeknownst to him, they aid not only in locating Jasmine but also in dismantling the robbery gang, especially by assisting Officer Yu (张志忠) infiltrate its inner circle. Tragedy, however, strikes when Bee and his family reunite with Jasmine just as they are celebrating their reunion.
