Set in the eighties inside the dangerous and enigmatic Kowloon Walled City, which was a de jure Chinese enclave within British colonial Hong Kong, “Twilight of the Warriors: Walled In” follows troubled youth Chan Lok-kwun (starring RAYMOND LAM) as he accidentally enters the Walled City, discovers the order amidst its chaos, and learns important life lessons along the way. In the Walled City, he becomes close friends with Shin (starring TERRANCE LAU), Twelfth Master (starring TONY WU TSZ TUNG) and AV (starring German CHEUNG Man Kit). Under the leadership of Tornado (starring LOUIS KOO), they resist against the invasion of villain Mr. Big (starring SAMMO HUNG) in a series of fierce battles. Together, they vow to protect the safe haven that is Kowloon Walled City.