Su Yao, a gifted young student at a modern music academy, accidentally transmigrates to 1970 and becomes an overweight girl who was rejected by the military district's arts troupe. After the original owner's failed audition, she was assigned to the cooking unit. The most demanding judge at the audition had been Lu Beichen, the famous no-nonsense instructor known throughout the armed forces.
Determined to reclaim her singing dream and change her fate, Su Yao quietly trains in the grueling cooking unit, turning the daily routine of chopping vegetables and tending the stove into rhythm exercises as she hones her singing. At a company get-together, the arts troupe puts on a mediocre show, and her comrades heckle her to go onstage and make a fool of herself. Su Yao walks onstage with composure and stuns the whole audience with “My Motherland,” blending in modern coloratura techniques. Her extraordinary voice leaves everyone shocked, including Lu Beichen, watching from below the stage.
The next day, Lu Beichen comes especially to hear her sing. Su Yao delivers a flawless performance of a technically demanding song, then asks the instructor to judge her abilities without either arrogance or deference. Impressed by her talent, Lu Beichen immediately approves her return to the arts troupe. From then on, Su Yao makes one triumphant comeback after another, taking the stage across the country and forging a legend. Alongside Lu Beichen, cold on the outside but warm within, she begins a military romance between two equals.
