The orphan Chapin was raised by his grandmother since he was a child. After receiving a birthday gift from a bicycle, his destiny changed. Chapin fell madly in love with cycling, and grandma also deliberately cultivated. As the years go by, Chapin has won countless awards in the juvenile bicycle competition. His pet dog Bruno has become a fat big dog, and his grandmother has become a powerful coach. Now Chapin's goal is one-the champion of the Tour de France.
The game was extremely difficult, but with strict training to base, Chapin seemed to have good endurance. But he strayed into the trap halfway and was kidnapped by the Mafia. After grandma arrived with Bruno, she began to look for Chapin's whereabouts. It turned out that the Mafia kidnapped a few cyclists to the United States, where they used machines to drive the riders to pedal, and the riders became a tool for bad guys to make money by gambling.
Grandma spent all her money in the United States, but by chance, three old ladies took in grandma and Bruno in the once glorious "Mei Metropolis". They lived on the frogs in the pond and lived very happily. But grandma has never given up the hope of finding the whereabouts of her grandson.
Once the Mirador trio and grandma performed percussion in a nightclub on the same stage, Bruno, a sensitive sense of smell, discovered the villain who kidnapped Chapin, and grandma also learned from the newspaper the inside story of the mafia kidnapping cyclists. After shunting and deployment, several old sisters decided to take the initiative to rescue Chapin. The old ladies and dogs got into the gambling club. They broke the gambling game in every possible way. After avoiding the bad guys' bullets, they detonated the grenades in the casino. Chapin has been riding his bicycle stupidly, and several old ladies beat off the chasing bad guys, and finally rescued Chapin.
