The Tibetan Mastiff Rifle, a loyal dog of the Discouraged Commander, was accidentally lost while inspecting the Star Planet, and it was destroyed everywhere in the city, causing panic among the people, and the police were looking for the Tibetan Mastiff.
Happy Superman and Dr. House are eating and are wandering around the park to eat, when they see that the dog of the neighboring child has a nose and two eyes, and he also wants to keep one. But when he heard a news report from Peach Sister that there were Tibetan mastiffs wreaking havoc in the city, he immediately went to help arrest them.
They meet on a street corner, and Happy Superman attacks the Tibetan Mastiff with a Happy Iron Fist, but is pushed away by it. He lost two melons next to him in a row, and was finally subdued by Happy Superman and chained up. He found the Tibetan mastiff's dog tag, which turned out to be called Rifle.
Because Rifle's dog tag hides plans to invade the star planet, the commander sends monsters to look for it, but the Tibetan mastiff rifle only recognizes one master in his life, and no one except the commander is obedient.
In the fight with the monster, Happy Superman used his hand to help Rifle block the monster's bullets and save its life. Rifle grinned and turned to the monster. After the fight, Rifle swallowed the dog tag in order to protect the commander's plan, but also opened Happy Superman and fled alone.
The monster reports to the commander that he did not get the dog tag, and Rifle may have been caught by Happy Superman to the police station, the commander believed the words of the monster, considering that the invasion plan would be exposed, decided to blow up the police station and let Rifle disappear with the plan.
After escaping, Rifle heard the commander's decision to blow up the police station, destroy it and plan, and remembered that Happy Superman was also kind to it and did not want to hurt the innocent, but the master's orders had to be absolutely obeyed, so it decided to bear it alone.
Rifle ran to the police station, broke the gate, took the bomb secretly sent by the monster, escaped from the police station, happy Superman saw through Rifle's move This is to blow up himself and the dog tag. Rifle, who swallowed the sweetheart cake, was immediately disgusted and spat out the bomb along with the plan of aggression, and the bomb and the plan were destroyed together.
Happy Superman knows so much about Rifle because of his special love for pets, once picking up a stray cat. In order to let it have milk to drink, even raised a cow at home. In order to give it a place to live, he personally built a cat house for him. After finding the kitten taken away by the cat dealer, he desperately rescued it and finally helped the stray cat find its mother.
Afterwards, Rifle was taken away by the police, and although it saved the entire police station and everyone, no one claimed it and needed to be sent to a remote planet.
Happy Superman was touched by Rifle's act of saving people and wanted to claim it, although Rifle also had tears in his eyes, but he still failed to agree. Because, in its life, it recognizes only one master in its lifetime.