A decade ago, polyglot police detective Chu Yi Han's mother went undercover to investigate a crime...and never came back. Since then, his only confidant is his “uncle”, as Chu Yi Han continued his search for his mother. Now, he has discovered there may be a chance to rescue her – but the stakes will be impossibly high… He learns that he must infiltrate a powerful crime syndicate known as the Northwestern Wolves – and quickly bring the organization down from inside. As he begins his quest, his path crosses with a dancer named Gu Lin Na, a woman with dangerous family ties to the syndicate. Can Chu Yi Han complete this perilous mission – and does Gu Lin Na hold the key to its success?