Lin Bei Xing learns the answers to all the questions of the college entrance exam and returns to the past (more specifically, the parallel world's past). She does very well in the entrance exam and expects to get the first place but ends up traveling back to the actual world's present. Before she traveled back, someone sent her a message saying, "Something happened at the lighthouse." Will it be the same case her father mentioned in the present in the real world? (Source: XieLalisa at MyDramaList)