He was once the "Dragon King," a legend known by the codename Zero, feared throughout the global underworld and carrying a fifty-billion-dollar bounty on his head.
A classified operation to leave his old life behind turned him into a casualty on paper. His records were erased, and his identity reduced to zero.
Now he has quietly returned to his hometown, Jianghai City, living under an assumed name as Ye Chen, a lowly security guard at Shengshi Group earning five thousand yuan a month.
By day, he patrols and stands watch, shunned by his colleagues, teased by the beautiful director, and scorned by the icy secretary.
By night, he crushes underground gangs with one hand, secretly protects his adoptive mother and younger sister, and gets caught up in a high-stakes corporate war worth tens of billions, all while posing as a security guard.
"A security guard with connections? He probably doesn't even know how to check the cameras," his colleague sneers.
Ye Chen smiles without a word. Then he uses his security clearance to uncover three years of financial irregularities and sends the corrupt director to prison.
"A lowly security guard thinks he's worthy of pursuing me?" The CEO's daughter throws a check at him.
He casually takes it. That very night, she is kidnapped, and he swoops in from the sky. The kidnappers drop to their knees, crying, "Y-You're not supposed to be alive?!"
"Ye Chen, you're just a security guard. There are circles you shouldn't try to enter," a business magnate warns him contemptuously.
Three months later, the magnate is bankrupt. Trembling, he discovers that the mysterious investor who bought his company signed the deal as "Zero."
Ye Chen simply straightens his security guard's cap and says to his reflection:
"It's time to change the rules of this city."
Your ordinary day is his retirement life.
