The Incredible Shrinking Doom!
Writer: Mike Friedrich
Artist: Herb Trimpe
Letterer: John Costanza
Introduction written by: Roy Thomas
Originally published: July 1972
Hank Pym, now pretty much retired from super-heroing, is a professor at ESU. Peter Parker is helping him and his stupid dog with some experiment with American Indian drugs when some thug shows up and says that he and his goons have kidnapped Curt Connors’s son. They want the drugs in exchange for his safe return.
Hank turns into Ant-Man and sets of with Peter to stop the kidnappers. Ant-Man attacks and Peter – still in his civilian identity – joins in. Unfortunately, the good guys need to cooperate; the baddies have injected the kid with some kind of lethal injection, and unless the antidote is administered he will die. Everyone takes off together and heads into a secret mountain complex.
The Connors kid ends up escaping, Ant-Man and Peter end up getting injected and yadda yadda yadda the dog saves the day.
Peter does turn into Spider-Man at one point, but it’s not very exciting.