After getting kicked out from their 24th school for starting fights and not being able to find another school that would accept them, Guan Yu and Zhang Fei thought it was a miracle that Liu Bei proposed to be their sworn brother so that they can enroll into the prestigious Dong Han Shu Yuan, a school exclusively for royalty, on the condition that they pay for his tuition. Though enrolled, it doesn't mean they may attend class in peace. They must first survive the school's death traps as well as hostile invasions from warring schools.