In the pyrotechnic Wutongli community, the camera girl Yan Xiaoyang met Cheng Shu, who was as silent and alienated as a sycamore tree. Beginning with an unexpected collaboration between a campus photography club and a scientific experiment, the two gradually glimpsed each other's scarred daily lives under the lens and microscope - Yan Xiaoyang captured "unusual moments" with his camera, while Cheng Shu looked for an outlet for suppressed emotions among plants and piano keys.
However, the calm daily life suddenly turns into a storm. The public humiliation at the photography exhibition tore apart trust, the nursing home demolition crisis triggered conflicts in the community, and the high-pressure control of Cheng Shu's mathematician father was ever present. In the whirlpool of protecting their homeland and fighting against power, young people are forced to grow up. The disaster of the collapsed sycamore tree revealed family grudges that had been sealed for two generations, and also brought to light Cheng Shu's hidden musical talent.
Overcoming the confusion of separation after the college entrance examination and studying in another place, Yan Xiaoyang's documentary photography was tempered in the flames of war, and Cheng Shu's composition talent was reborn amidst family breakdown. From the warmth of the community bakery to the edge of the world stage, they are always connected by the deep roots of Wutong. In the end, when the "Indus Symphony" full of affection for homeland was played under the sycamore saplings symbolizing rebirth, the camera captured not only a wedding, but also the love and protection in the moment after the scars were healed.