Jiang Yi never thought that he would fall in love with a "Xingluo" dress at first sight, let alone that he would fall in love with the dress's designer, Su Nian. In order to protect her design dream, he is willing to be her "hidden" husband: she stays up late to revise the manuscript, and he cooks midnight snacks; when she is questioned for "relying on the movie star", he takes her to stand on the Paris T stage. From the awards night hiding in the closet, to the confessions on the banks of the Seine, from the daily fireworks in the studio, to side by side on the charity road - it turns out that the best love is when you design the starlight, and I become the starlight for you, letting the word "Nian Yi" be engraved into each other's remaining lives.