New Happy Dad And Son 4：Perfect Dad

The movie follows the characters of the cartoon Big-Headed Kid and Small-Headed Father, telling the happiness and warmth of their family.

The film tells the story of the big head son’s family who encountered difficulties in the process of the child’s growth; they were not afraid of anything and faced everything together. The mother hoped that their son will become a dragon.

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The son, Da Tu, learns that the White Evening Town he created is real when the entire family travels to Russia for business. The family is forced to spend the night at a small hostel due to a traffic accident. They discover they are imprisoned inside Da Tu's artwork when they wake up the following morning.

The big-headed son who has the dream of aerospace meets a special "alien friend" by chance. The big-headed son and the marshmallow's sister team up to participate in the Little Astronaut Project and jointly challenge the four-level space mission. Can they win the competition?

Big Headed Son and Little Headed Dad in the experience of “ancestral villain” Dr. Wang invented a new product “mini-paradise”, was accidentally ejected to the mini state back to the real world! Father and son in the wild “encounter” a group of magical “partners”, thrills, hiding, chasing, rescue ...... good partners do not fight not get acquainted with the Lightning Command assembled, in order to fight against the common enemy! Opened a thrilling adventure! What kind of crisis will they encounter? What kind of conspiracy is hidden behind the scene? Will they be able to defeat the evil? Will this fantasy adventure change the relationship between Big Headed Son and Little Headed Dad?