Due to an injury retiring behind the scenes, motion capture actor Lin Qi, to help his mother Li Xiulan win the city square dance competition, brings out professional optical motion capture suits and holographic projection, attempting to use rigorous mecha data to correct the aunts' dance postures. However, cold technical commands and casual square dance are completely incompatible; the aunts' physical exhaustion, frequent equipment malfunctions, and competitors' taunts make this special training fraught with difficulties. Facing the collision of two generations' concepts, Lin Qi must let go of his obsession with perfect data in order to lead this two-dimensional square dance troupe to break through resistance and seize the championship.