Plot
In a realm where tranquility has reigned for over 10,000 years, the coexistence of humans, the mystical Yashou, and the subterranean Dixing is suddenly thrust into jeopardy. The planet Haixing, once a symbol of peace, becomes a stage for foreboding events. The ordinarily secluded Dixing spark chaos above ground, wielding their peculiar abilities linked to four sacred relics of antiquity.
Caught in this spiraling chaos is the unconventional Zhao Yunlan, director of the Special Investigation Department (SID), tasked with unraveling the enigma of these escalating disturbances. His path intertwines with a serene university professor, Shen Wei, whose wisdom and willingness to assist the SID belies a hidden understanding of the unfolding mysteries.
In this battle against encroaching darkness, they find an ally in a Dixing leader, the Black Cloaked Envoy. This enigmatic figure stands as a bastion of justice, striving to preserve the fragile peace. However, as a formidable adversary begins to manipulate events from the shadows, the collective efforts of the SID and their allies are tested to their limits.
As this gripping tale unfolds, an ancient pledge resurfaces and a bond, transcending lifetimes, blossoms between two guardians. With every twist and turn, "Guardian" keeps viewers on the edge, tantalizing them with the promise of a world teetering on the brink, illuminated by enduring friendships and the timeless struggle between light and darkness.