The first love in childhood cannot withstand the vicissitudes of life. Once the feelings are mixed with other things, the unchanging waiting is no longer an unswerving love. In the prison, the young man is dressed in blood and has the poisonous wine that was just given in his hand. Thinking of a few years ago, On the way to exile, when he was cared for and helped by others, he swore with his heart and vowed to repay the favor to the death. He fought against the powerful eldest prince and helped him avoid open and secret arrows time and time again. Regardless of his physical weakness, he put on military uniform many times and went to the border to overcome all difficulties and help him ascend to the throne. It's a pity that once the world was settled, the young man returned from victory with scars all over his body. He just wanted to see him as soon as possible, but he never expected that he would be imprisoned as soon as he entered the city, just because the soldiers who entered the city disturbed the wedding of the emperor and empress. In the sky prison, letters with sweet words from the past were like daggers stabbing him over and over again. Just as he was about to swallow the poisonous wine in his hand, Xiaotian's voice appeared again in his mind: "Master, if you are sad, please leave. You have nowhere to go. Everything can start again. Don't let your mind wander..."