Su Qingyuan is a rising "sweet girl" in the entertainment industry. She won the best newcomer for her sweet pet drama, but she hides a secret that no one knows - she is the mysterious suspense writer "Long Night" in the Internet literary circle, and her hard-core stories are popular all over the Internet. Backstage at the awards night, as soon as she picked up the trophy, she clashed with her agent over a reminder message on her old phone. Sticking to her bottom line in writing, she accidentally exposed her secret to a strange man in the corner of the award night.
A week later, Su Qingyuan joined the production of the sweet pet drama "Summer Whispers" and discovered that the strange man was the show's gold medal screenwriter Lu Zeyan - he had written the hit reality-themed "Floating City". He was not only the number one fan of "The Long Night", but he had already noticed her dual identity. From testing each other to forming a "confidential alliance", the two are actors and screenwriters during the day and study the plot of "The Long Night" together at night. Lu Zeyan also helped her promote the film and television adaptation of the novel and became the guardians of each other's secrets.
However, the crisis of identity exposure, maliciously hyped scandals, and threats from peers came one after another. Su Qingyuan struggled between her top-notch aura and her original intention of writing, with Lu Zeyan always standing by her side. As the "Mirror Killer" in the plot of "The Long Night" approaches the truth, her double life in reality is about to face an unavoidable choice.
