Xie Zhiyuan, a middle school history teacher, transmigrated unexpectedly after visiting a temple dedicated to Guan Yu. He became a young clerk in Guan Yu's retinue, responsible for military dispatches and provisions. He remembered how Guan Yu would flee to Maicheng and be ambushed at Linju, as told in Romance of the Three Kingdoms, but he couldn't recall every detail, and he couldn't make Guan Yu listen to him in everything. With Lu Meng feigning illness, Jingzhou left undefended, and Eastern Wu's secret plans underway, Xie Zhiyuan could only adapt to the chaotic times while contacting Liu Bei and Zhuge Liang, trying to ensure that Guan Yu could suffer defeat without dying. Jingzhou would eventually fall, but after Maicheng, the mountains and passes still lay ahead.
