Ling Fei, a transmigrated protagonist, only wants to lie low and live as an idle slacker. Stopped on the street and forcibly pulled in by top-tier female singer Luo Xiaoyi, they agree to a fake marriage with a monthly salary of fifty thousand, agreeing to leave each other alone in private. Bored at home, the protagonist picks up a guitar, casually strums half a song, and uploads it to the internet. Just half a melody instantly sets the entire internet ablaze, and music industry rival Shen Man pours a huge fortune into trying to buy out the copyright of the song. Luo Xiaoyi subsequently and shockingly discovers that the mysterious song composer frantically sought by the entire internet is actually the cheap fake husband she hired with her own money.