Deep in the city, mysteries are hidden. Xia Yan and his partners walked side by side by chance, exploring the truth in layers of fog, and restoring the facts from clues. There are humor and twists along the way, as well as warmth and perseverance. They support each other, solve the mystery with sincerity, and face obstacles with fearlessness.
We not only cherish the memory of those heroes who silently guarded us, but also cherish the sincere friendship of walking side by side. Everyone adheres to their original aspirations, upholds justice, keeps walking on the road to pursue the truth, interprets their responsibilities with actions, and dispels the haze with companionship, so that justice can finally be demonstrated and warmth can stay in the world.
Purpose: To pay tribute to the fearlessness and dedication of the anti-narcotics police, to pursue justice and truth; to cherish partners who share weal and woe, and to protect the warm and accompanying friendship.