Pete's team mate Marcus Allen is addicted to horse races. His bookie, one of the Green Goblin's crime barons, offers him one out of gambling debts: a single injection. Alas, Dr. Curt Connors's potion installs an 'armor' of fire, creating the 'Molten Man', whose glow is controlled by a device the Goblin gets. Spiderman must counter, yet save the uncontrollable arsonist.