When Li Zixuan, a 21st century girl, was browsing Douyin, she was sighing at the scene in "The Legend of Zhen Huan" in which Zhen Huan leaned on the plum garden and made a wish. Suddenly a stream of light flashed and she actually traveled to the ancient harem and became a silly, sweet and beautiful girl. When she first entered the palace, she was naive and ignorant. She repeatedly encountered obstacles in drafts and palace battles, was bullied, and experienced ups and downs of being favored and falling out of favor. In the predicament, she discovered that the mobile phone in her hand could receive system instructions, and she needed to complete 108 palace battle tasks before she could return to the present day. In order to survive, she had to collude with the imperial doctor and even gave birth to a child who was "green" to the emperor. As the mission progresses, she gradually learns to maneuver from a silly person who is at the mercy of others, but in the process she also discovers the secret of the data cage hidden behind the mobile phone system. Every choice she makes is accompanied by the threat of system backlash. Should he complete the mission and return to the familiar modern era, or should he stay in this harem full of calculations but also hidden with unknown bonds? Her fate sets off a thrilling game between the blue light of the mobile phone and the red walls of the harem.