A fortune teller once predicted that Noah (played by Lai Ya-Yen) would not live past the age of 25. There is only one way to crack this, that is, to dress up as a man and celebrate her 26th birthday as a man. Over the years, because of this special life experience, Noah has been living a displaced life, without close playmates or trusted friends. The disguised mask makes Noah feel very tired, and the upcoming 26th birthday brings together all her hopes. By chance, Noah, who runs a hot dog stand, met Du Zifeng (played by Chen Chuhe) and Du Zihan (played by Tao Yanlin), brother and sister, and became sworn brothers with Du Zifeng by accident. Noah's hot dog stand was stolen, and Du Zihan, who liked Noah, arranged her to be Du Zifeng's assistant, and Noah's only task was to help Du Zifeng pursue the girl he admired, Mu Yan.