A Walk on the Waterfront is a secondary quest in which Geralt is tasked with accompanying, and protecting a well-dressed man along the docks.
Along the route he has chosen to take, the man is attacked by several groups of bandits, each that seemed to know who the man was, and that he would be coming that way. Geralt questions the man as they travel together, but he reveals little about his intentions, though they are obviously suspect.
Once Geralt accompanies the man to his destination, it is revealed that the man is a fisstech dealer who is meeting his supplier. Depending on Geralt's choices, the witcher can either help the dealer, and receive a paltry sum of crowns, or call the deal off.