Immortal Lord Yun Yan failed to survive the catastrophe, and his soul traveled through the modern campus, becoming a bullied "Five Scum of War". In order to repair the broken foundation, he was forced to put on a mask of arrogance and pretend to be the school bully to collect the will power of all living beings. However, when he took action to protect his tough and kind-hearted schoolmate Lin Xiao, he unexpectedly came into contact with the huge forces in the shadow of the city, and attracted the attention of the official secret agency "Star Observation Institute".
As crises ensued, Yun Yan discovered that Lin Xiao was actually the legendary "Key to Starlight" that could unlock the "other shore", and he himself had already become the focus of a game between various forces. In the intertwining of official cooperation, secret pursuits and campus daily life, the fallen immortal and the girl with the power of the stars are forced to face the huge whirlpool together.
When ancient heritage collides with modern technology, and when the oath of guardianship encounters the secrets of the world, can Yun Yan protect this glimmer of light that shines into his cold fairyland while rebuilding his power? And what kind of fateful turn will the awakening starlight in Lin Xiao's body bring to them?
This is a guardianship across time and space, a legend intertwined with urban fireworks and extraordinary crises.
