Middle school student Xia Xiaozhou is a volunteer guide at the Yellow Crane Tower. Under her father's arrangement, she is tasked with hosting Jiang Tianliu, a Chinese boy from Indonesia, on his visit to the tower. Unexpectedly, Jiang Tianliu possesses a "token" that allows entry into the secret world of the Yellow Crane Tower. Together, they venture into the tower's memory realm, exploring historical clues related to it.