AI engineer Gu Jiuli founded Jiuqian Technology, a company dedicated to developing accompanying robots, because of his childhood experience. Hao Liang, a senior majoring in early childhood education, likes to sing, but because of her mother's opposition, she can only secretly be a singing live blogger at night-"A Dia Sister". Under two different identities, Hao Liang showed different personalities. Hao Liang is about to graduate. In order to avoid being discovered by her mother as an anchor, she came to Gu Jiuli's company for an internship. When the two met, Hao Liang fell in love with Gu Jiuli at first sight and showed her kindness frequently. But because of his "face blindness", Gu Jiuli did not realize that the girl who secretly expressed his feelings to him was Hao Liang, so he made a series of ridiculous things. After the two resolved the misunderstanding, they finally came together. Because of Gu Jiuli's excellence, Hao Liang decided to improve herself and strive to become a better self. At the same time, Hao Liang's appearance and company warmed Jiuli's lonely heart due to her childhood experience. Gu Jiuli gradually learned about Hao Liang's dream and encouraged her, making Hao Liang more confident. In the end, with each other's support, the two fulfilled their respective dreams.