Shun decides to build an employee rating system to prevent his subordinates from being laid off, but it backfires and ends up leaving him jobless. His girlfriend makes it worse by leaving him afterwards. He decides to start his entrepreneurship journey by attending a talk at Born Hub, where he meets new friends.

Dusty archives are opened, and a sense of tension fills the air. When real-life mysteries from Hong Kong become the storyline, can these cold cases finally be solved? While pursuing clues, can the investigators break through the deadlock and bring the truth to light?