The story of "Electric Wave" takes place on the eve of the liberation of Shanghai, and is based on the true story of the martyr Li Bai. It is a city card born from the red genes of Shanghai. There is no dialogue in the dance drama film, and the emotional explosion is vividly expressed through the body, conveying the strong love between the two through their dance, eyes, and body movements. The emotional struggle and compromise, as well as the mutual empathy between them, are more intense and lasting than any line of dialogue. The film is adapted from the original dance drama of the same name.

An underground CPC telegrapher, Li Xia, fights against the Japanese enemy and dies before the eve of Shanghai's liberation in 1939.