New Big-headed Son and Little-headed Dad 3: Russian Adventures

Synopsis

The little father took his family on a business trip to Russia. The older son discovered that the White Night City he painted in Russia was real. The family encountered a traffic accident halfway and was forced to stay overnight in a small hotel. The next day they woke up and found that they were in the older son. The world in the painting-White Night City. They found that if the crisis in White Night City was not resolved, they would not be able to get out of this world. The family went through many difficulties in White Night City and finally returned to the real world.(translated from douban)