When the Green Goblin swears to destroy the Hobgoblin for stealing his shtick, only Spider-Man can save the city from World War "G"-- but with his new black costume, crooks and citizens alike don't know if he's a new hero, a new villain or the same old Spidey!
Spider-man is suffering from an identity crisis. Since he started wearing the Black Costume, that he stole from the Tinkerer in issue #21, nobody seems to recognize him. The Green Goblin returns to one of his hideouts and finds out that he has been burglarized. A second-story thief has robbed the Green Goblin's lair and becomes the Hobgoblin. This leads to a Goblin vs. Goblin grudge match that ends with Spider-man capturing both.
This is the 1st appearance of the Hobgoblin and Green Goblin in the Marvel Adventures universe.