The ending of the love story 202 1 in Erlong Lake is that all the villagers help Zhang Lidong recover his memory, Zhang Lidong and Wang Chunhua come together, and the marriage between Zheng Pang and Qiuyue is also acquiesced by Wang Zhongde. Whether Zhang Lidong can recover his memory or not, Wang Chunhua will stay with him.

This play mainly tells the love story of Zhang Lidong and Wang Chunhua. After several years of long-distance love, this man and this woman are finally together. At this moment, Wang Chunhua's father Wang Zhongde suddenly appeared, and he disagreed with Wang Chunhua and Zhang Lidong.

At the same time, Li Tiegang, who always liked Wang Chunhua, felt that the opportunity had come, so he tried his best to please Wang Zhongde. He wanted to marry home, so he staged a war for the position of the king's son-in-law. Li Tiegang tried every means to catch up with Wang Chunhua, but Zhang Lidong solved them one by one.

In order to get Li Tiegang to give up Wang Chunhua, Li Tiegang's sister Xiaomei introduced him to her best friend in college, but it caused a storm. Finally, Zhang Lidong and Wang Chunhua joined hands to tide over the difficulties and came together.