In this world, red, when it appears on the human body, is called "unknown". After Song Xingsi was born, she was abandoned because she was found to have red eyes, and was later adopted. When he was in college, he accidentally traveled back in time because of cultural relics. He met the prince Shen Yu, who was also called "unknown", and later helped him fight for power. But things didn't go smoothly for the two of them. It seemed like someone was blocking them from the middle. However, as they solve cases again and again, something seems to be different between the two...
Intention: We are not accepted by the world and are stuck in the quagmire. Fortunately, you are stubborn enough and I am lucky enough. Then let us sing loudly and raise a glass to the moon.