Three years ago, Gu Ze suffered a cruel betrayal from the people he trusted most. His parents took away his eyes and gave them to his younger brother, Gu Yuan, before abandoning him in a garbage dump. Just when his life seemed completely ruined, Gu Ze unexpectedly awakened the mysterious Strongest Teacher System, giving him a completely new path forward.

In an abandoned temple deep within a deserted village, Gu Ze began training a group of extraordinary ghosts. Among his disciples were terrifying yet legendary spirits such as Meng Po, Sadako, and the Black and White Impermanence. As his disciples grew stronger through his guidance, Gu Ze received ten times their cultivation in return. With the system supporting him, he patiently endured the darkness while waiting for the day his sight could finally be restored.

When the Gu family eventually came looking for the precious Earth Spirit Ginseng, they never expected to encounter the ghosts Gu Ze had trained. Their attack was quickly turned against them, but Gu Shengtian responded with forbidden talismans that left several of the ghosts seriously wounded. The confrontation finally pushed Gu Ze's three-year limit to its end. His eyesight returned, and along with it came a terrifying new ability known as Cataclysmic Transformation.

Gu Ze then confronted Gu Yuan and settled the betrayal that had haunted him for years, taking away the cultivation his brother had used to benefit from his stolen eyes. But before he could enjoy peace, an S-rank ghost tide descended upon Kunshan. Leading his hundred ghost disciples into the city, Gu Ze turned his unique teaching abilities into a weapon, taming corpse dogs, defeating the mysterious Shadowless Ghost Weasel, and helping the city survive the deadly crisis.

With the battle behind him, Gu Ze establishes the Hundred Ghosts Academy, opening a completely new path where humans and ghosts can coexist and fight against greater supernatural threats. His journey has only just begun, and this time, he intends to use the power of ghosts to protect the living.