The story of "Heavenly Court Gaiden" is as follows:

The name of the person who looks after the treasures of Heavenly Court is Wang Dou. Wang Dou's son Xiaodou'er is lively and cute, with an active and naughty nature. One day, Pang San, the adopted son of Old Man Hugua, sneaked into the palace and was discovered. Fortunately, Xiao Dou'er helped him escape and the two became good friends. Xiao Dou'er was playing in the water by the lake. The water in the lake surged, shaking the Dragon Palace, and there was chaos in the Dragon Palace.

At this time, the Dragon Palace is holding a wedding for Dragon Girl Xiaoqian. Dragon Girl, who did not want to get married, took advantage of the chaos to escape from the marriage. The emperor sends Yaksha down to capture Xiaoqian. During the crisis, Xiaoqian met the scholar Hui. Hui spoke up and saved Xiaoqian. Hui was injured by Yaksha. Xiaodouer and the others stepped forward to fight off Yaksha. They went to the old immortal Xiaoyao to get Tianshan Snow Lotus and saved Hui.

After Hui recovered, he went to the capital to take the exam. Xiaoqian was reluctant to leave and gave him a volume of scripture as a souvenir before leaving. Hui went to Beijing to win the first prize and was recruited as the consort. He read the scriptures given to him by Xiaoqian at night and developed a magical skill. After usurping the throne, he dominated the world and poisoned the people. When Xiaoqian learned about it, she was heartbroken. Xiao Dou'er and Fat San took Xiao Qian to find Hui Lunli, but Hui chased them.

In desperation, Xiaoqian remembered the words of old man Xiaoyao, "Only true love can break the magic power", so she rushed forward desperately, sucked out the dragon ball from his belly, and broke the magic power. With the joint efforts of everyone, the devil was finally subdued. Later, the emperor punished Xiao Dou'er by entering the Linglong Tower for 300 years to reflect on his mistakes, because Hou Baobao (Lin Zhiying) still had a competition with him.

So before entering the Linglong Tower, the two returned to the palace to continue their martial arts competition, but were interrupted by Fatty King Fat San. In order to prove that even friends can compete in martial arts, the two of them suddenly competed with Fat San. The fun begins and the slow shot ends.

Later, the baby monkey was unable to find the palm of the Tathagata Buddha's hand and was pressed against the Five Elements Mountain. Then his friends came to visit him. The baby monkey escaped from the Five Elements Mountain and chatted with them for a while. Baby Monkey returned to Five Elements Mountain again with two more Spring Festival couplets in his hand, and then his friends said auspicious New Year words.