Lin is a plain-clothes cop in the crime-riddled district of Mongkok who bungles a vice operation directed at mainland prostitues. He falls for a ditsy hooker who tells him the love of her life is a killer who once svaed her life in a shootout. Lin is a plain-clothes cop in the crime-riddled district of Mongkok who bungles a vice operation directed at mainland prostitues. He falls for a ditsy hooker who tells him the love of her life is a killer who once svaed her life in a shootout. Lin is a plain-clothes cop in the crime-riddled district of Mongkok who bungles a vice operation directed at mainland prostitues. He falls for a ditsy hooker who tells him the love of her life is a killer who once svaed her life in a shootout. Lin is a plain-clothes cop in the crime-riddled district of Mongkok who bungles a vice operation directed at mainland prostitues. He falls for a ditsy hooker who tells him the love of her life is a killer who once svaed her life in a shootout.