The film mainly tells the story of the dog clan fighting against the cat clan in order to protect humans. The protagonist of this film is a puppy, he has a name-Lu
Since the beginning of the history of humans keeping pets, cats and dogs have been a pair of enemies, and the human beings who dominate the universe do not know that the cunning cats have long been ambitiously trying to occupy the earth and dominate mankind. To this end, they have been passed on from generation to generation, developing various high-tech weapons, and undercover people waiting for an opportunity to launch a coup.
If it weren't for the loyal dog clan who tried every means to defeat the cat clan's crazy plan every time at the most dangerous moment, I am afraid that humans would have been under the rule of the cat clan for a long time. As a result, the cat tribe regards the dog tribe as a thorn in the flesh, and is always waiting for the opportunity to put the other party to death, and get rid of it completely.
One day, a detective dog named Buddy who worked at Brody's was kidnapped suddenly and disappeared. Buddy’s task is very difficult and important, because Buddy’s owner, Professor Brody, is a scientist who studies human anti-dog allergies. Once Professor Brody's research is successful, it will indicate that more dogs will be favored by humans. Fortunately for the dog clan, that is definitely something that the cat clan doesn't want to see.
Therefore, the three loyal dogs headed by the Butch detective dog and guarding the neighborhood of Professor Brody's house unanimously concluded that Buddy was kidnapped by the cat family. One month after Buddy was kidnapped, the dog family re-selected a detective dog for Professor Brody's home. This detective dog named Lu by the little owner Scarter was framed by the cat family when he first arrived. Not only that, but Butch is not optimistic about Lu, the new subordinate. But in the operation of stealing and destroying Brody's latest formula time and time again planned by the cat chief Dingle, Lu defended the honor with his loyalty.
After the Brody family was kidnapped in Dinge's plan, the dog family voted at the World Dog Conference Center to sacrifice the Brody family to protect the newly developed anti-allergy formula for dogs. Lu has become a good friend of the young master Scart. Although he cannot influence the decision made by the World Dog Conference Center, it still has to use its own power to rescue the owner's family from Dingo's hands.
The owner of "Lu" kidnapped an abandoned factory and wanted Lu to surrender. Lu was worried about the safety of the owner's family. He sneaked into the factory to try to rescue, but was discovered by the cat clan. The dog rescue team arrived in time to defeat the cat clan, and Lu risked his life to enter the burning factory and get the owner out of the family. The little boy hugged Lu and said, "You are my best friend."
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