Xiao Ci traveled from modern times to a poor family with only his mother and sister alive, so he disguised himself as a man and studied hard since he was a child, hoping to become famous and serve the country. He originally had the talent of being the number one scholar, but because he was born too good, he had to be ranked third in the imperial examination. However, he met the crown prince and became the crown prince among the nine sons competing for the title of legitimate son. She is calm and self-possessed, but is attracted to the prince. He is dark and arrogant, but falls in love with her. But their identity and purpose lie in front of them, how should they choose?
