My Dog Dou Dou is a heartwarming tale about the relationship between a young boy with his dog.
Xing, the young boy, whose parents separated due to his father's gambling ways was left to stay with his father, Meng who works as a mechanic in a workshop to pay the bills and to fuel his gambling addiction. Due to betting big in a match and lost all the money he loaned from loan sharks (whom the boss likes to call themselves businessmen who are civilized), he's now highly in debt along with the burden of raising his son on his own.
Xing ran off from school one day where coincidentally the dog ran away from his uncaring owner on that day. Xing later met the dog at a park and saw that he was starving and hence shared his bread with the dog. As a result of this, the dog followed him as he leaves. Halfway Xing telling the dog that he can't owned him because of his father, it started to rain heavily where both ran to try and seek shelter. In the midst of running, lightning struck where they were and both were rendered unconscious. Xing woke up unhurt but upon seeing the dog lying motionless, he decided to carry the dog home.
When his father arrived home, he was angry at Xing for bringing home a dog but the headstrong kid kept insisting that he wants to keep the dog since it's his birthday the next day. That night, the dog observed as Meng prayed to an idol god and grabbed some numbers out of a toy box for his 4D numbers. The next day, Meng instructed Xing to buy the 4D numbers while he went to work.
That night, after Meng had calmed down and was awoken by the thunderstorm outside, he went into his son's room but found that he had snuck out and found him accompanying beside the dog, hence decided to carry the dog back home. Again after numerous reasoning which fell on deaf ears of the son to give up the dog, the dog suddenly got up and performed like a prayer to the idol god and took 4 numbers out of the box.
Pretty soon, Meng found out that the numbers that the dog who's now named as Dou Dou by Xing, came out top prize and that the dog can predict 4D numbers.
This prized possession that Meng tried to protect were soon publicly known no thanks to Meng's old friend from the same orphanage who is now a reporter for the paper where she got involved in the secret when Meng and his son stayed over at her place when they were on the run from the loan sharks.