A certain day, a certain month, a certain year

Sean (played by Tse Junhao) works as a photographer in an advertising company and likes to take pictures of passers-by everywhere. Boni (played by Sun Jiajun) is the new creative director of Sean Advertising Company. She believes that to be a female boss, she must not only win with strength, but also display a serious and intimidating attitude in order to be able to manage her subordinates. But Boni's arrogant attitude put her at odds with her colleagues. Boni showed her brilliance on the new advertising plan, but when she recommended it to her client, her client showed her the finished product of another advertising agency that had the same idea as hers. Boni was accused of plagiarizing other people's creations. The boss of the advertising company, Mr. Zhang, was furious and fired her immediately. Boni went home full of disappointment and fell asleep. However, when she woke up, she found herself back to yesterday and repeating everything she encountered yesterday. Boni once again faced client accusations and the humiliation of being fired, but she had calmed down this time. She used the experience she accumulated every day when she woke up to return to yesterday, determined to find out the traitor who leaked her ideas to other advertising companies. After Boni deliberately got close to her colleagues, everyone began to have different perceptions of her. ...