A flashback tale to a time before super-powered individuals were everywhere. Captain George Stacy is looking for a serial killer. His brother, Arthur, is head of security at Osborn Industries. When a police officer is attacked at Osborn's they both end up on the scene. More officers are attacked and a shadowy savage beast is seen.
Arthur finds an employee identification badge belonging to Nels Van Adder. When he questions Norman about Van Adder, Norman says he was a disgruntled employee that had to be let go. Van Adder was actually a test subject when Norman was trying to perfect the Goblin formula. Because he couldn't locate his former partner, Mendel Stromm's notes, Van Adder turned into a red beast, a Proto-Goblin.
When Proto-Goblin wants revenge against Norman, can the Stacy brothers save Osborn...and do they want to save him?