Through an accidental commission, Lin Xiao was involved in the complex conspiracy of the "Dark Night Group". This powerful and cruel gang organization hides its crimes at all costs. Faced with numerous dangers and constant provocations, Lin Xiao did not choose to retreat, but bravely faced the enemy, step by step deeper into the enemy's hinterland.
In this seemingly unequal contest, Lin Xiao not only has to face the threat from the "Dark Night Group", but also the misunderstanding of the police and the suspicion of his peers. But he firmly believes that even the deepest darkness cannot swallow the firefly of hope. Through wisdom and courage, Lin Xiao gradually uncovered the mysteries one after another, not only for the truth, but also for justice.