Guan Yu and Zhang Fei were high school students, but due to their excessive love for chivalry, they had been expelled from twenty-four schools, hence the nickname "Twenty-Four Schools"! Just as the two were feeling desperate after being expelled again, a man with large earlobes suddenly appeared. He introduced himself as Liu Bei, courtesy name Xuande, a fallen noble who often changed schools because he couldn't afford the tuition fees. Liu Bei proposed a plan: since he had noble blood, he could attend the best aristocratic school in the country, the "Eastern Han Academy," but it was too expensive and only members of the royal family or nobility could enroll. Zhang Fei, wealthy and generous, said he could pay the tuition for everyone. Liu Bei said that as long as the money issue was resolved, everything could be solved. He suggested that the three of them swear brotherhood, so they would all be royal relatives and could enroll! Thus, the three went to a beautiful and meaningful place to swear brotherhood. But just as they finished saying the last sentence: "We do not seek to be born on the same day, month, and year, but we wish to die on the same day, month, and year!" Four people - Xiu, Wang Dongsan, Ding Xiaoyu, and Wang Arthur - traveled through a time portal from the Iron Space-Time to the Silver Space-Time. Due to Dongsan's carelessness, a coin fell and knocked over an empty can, which triggered a chain reaction ending with a rock falling and striking Liu Bei dead! Guan Yu, loyal to his promise, wanted to follow his elder brother and die on the same day, but Zhang Fei stopped him by knocking him unconscious. They then discovered that Liu Bei wasn't dead, just severely injured and unconscious. After consulting with Dongsan, Xiaoyu, and Arthur, they decided to leave Xiu, who looked similar to Liu Bei, in the Silver Space-Time as a substitute. Reluctantly, Xiu agreed to maintain the space-time order. The other three took the seriously injured Liu Bei back to the Iron Space-Time for treatment. When Guan Yu woke up, he found that the fake Liu Bei (Xiu) was alive and was very happy. Zhang Fei was also glad that they didn't have to die together. Finally, the three arrived at the "Eastern Han Academy," where Guan Yu and Zhang Fei believed they could make a great impact!