Teenage photographer Peter Parker is sent by the Daily Bugle to investigate a series of mystery lights in a wooded area outside of the city, when a sudden landslide forces him to swerve off the road and land in a tree.
On a blistering hot afternoon, Peter is walking to the house of a brilliant scientist, Doctor Smartyr, when suddenly he notices that the sidewalk, and most of the neighborhood, is turning to ice. Hearing desperate cries for help from Smartyr's house, Peter changes into Spider-Man and breaks through a laboratory window to find the frightened scientist being menaced by a towering ice creature.
Peter flies to Florida to find and photograph the Lizard Man. Spider-Man meets Dr. Curtis Connor's family. He is pulled underwater by the Lizard Man, but escapes.
The Vulture uses a sonic device in his head mask to control an army of vultures. After the Vulture beats Spider-Man, he holds the city up for a $2,000,000 ransom and J. Jonah Jameson blames Spider-Man.
Dr. Stillwell creates the Scorpion on J. Jonah Jameson's behalf to capture Spider-Man. The Scorpion attacks Spider-Man, who escapes. However, the Scorpion's evil nature takes over as his strength increases which causes him to go after Jameson.
Someone has sent a one-eyed idol to J. Jonah Jameson. Jameson is hypnotized by the idol to steal his own money. Spider-Man finds the thief, but he escapes with the money.
Spider-Man attempts to halt the Phantom's activities only to be set up by him and his robot henchwoman Marie, who is disguised as a shop window mannequin.
Spider-Man gets into an embassy, sees the foreign visiting Prime Minister tied up and gagged, and fights someone impersonating the Prime Minister, but he is forced to retreat to find proof after being gassed by the imposter's cane and having his camera stolen.
Miss Trubble, a book dealer obsessed with mythology, is owner of a magical chest from which she summons a succession of mythological figures, from centaurs to the Cyclops to Diana the Hunter-Goddess, to commit robberies of ancient artifacts on her behalf.
A scientist, Dr. Noah Boddy, renders himself invisible by means of a machine, then acts to avenge himself upon Jameson, who publically maligned his theory of invisibility.
Reports of a legendary flying ghost ship, the Flying Dutchman, being sighted near Smuggler's Cove summon Spidey to the area, where his investigation into the phantom ship's appearance leads him to a cave in which he finds his sworn adversary, Mysterio, plotting with a pair of thugs.
When a Jekyll-and-Hyde poster comes to life at the soon-to-be-demolished Castle Theatre, Spidey visits the theatre and encounters mischievous Blackwell the Magician, who is trying to attract public attention to the theatre in hope of preventing its demolition.
Spidey chases the culprit in an attempted theft of jewels from a countess and is surprised to find that his opponent, dressed in a black Human Fly costume, also has the ability to scale walls and can cross thin wires between buildings.
Oil is being stolen in huge quantities by Dr. Von Schlick, a chemist villain garbed in a rubber, non-stick suit and armed with petroleum-based bubbles that he fires from his fingers.
The nefarious Vulture traps Jameson inside of a tower-clock and uses the well-informed Daily Bugle publisher as a source of information on the whereabouts of a visiting diamond merchant and the testing of military equipment—two prospective heists for the greedy bird-man.
Life-like and substantial shadows of beasts are projected in various locations in New York City by the Phantom's new Shadow-Scope glasses to cause panic and enable the Phantom to effect unconstrained bank and jewelry store robberies.
While Blackwell the Magician is entertaining at the Castle Theatre, his house is invaded by the Green Goblin, who swipes some of Blackwell's props and peruses Blackwell's book of magic spells and incantations.
Dr. Curtis Conner goes missing in the Florida swamps after finding the Fountain of Youth. When Spidey investigates the scientist's disappearance, he discovers a fifteenth century Spanish conquistador, Ponce de León, who is intent upon keeping the magical fountain a secret.
Because he hates rock-and-roll for its having replaced classical music in the tastes of the masses, a fiddler with a deadly, sonic violin seeks revenge upon pop-music sponsor Cyrus Flintridge.
Art robberies are committed by an old enemy of Spider-Man, actor Charles Cameo, who can utilize masks and make-up to usurp any identity, including those of J. Jonah Jameson and Spiderman!
When the Scorpion, intent on vengeance upon Spider-Man and Jameson, escapes prison, he visits the laboratory of his creator, Dr. Stillwell, and drinks a potion that vastly increases his size.
Paroled from prison, the Human Fly Twins rob diamonds from an importing company, and one of them does this deed in a Spider-Man costume so that the guard, before being hit on the head from behind by the second twin, believes that Spidey is the culprit.
