John suffers an asthma attack at school
while reading about Captain America appearing at a local event. He is
sent to the infirmary where the nurse gives him his medicine and has
him lie down. Ruth, another student having an attack, comes in; John
can't believe she has asthma because she's captain of the swim team
but it's true. As they compare notes on their malady, a villain in a
grotesque costume calling himself the Asthma Monster enters fires his
Aller-Gun at the nurse causing her to have an attack. The allergen
doesn't work on the kids because they have just taken medication so
the villain teleports away. The Monster attacks several classrooms
full of children and escapes; John dials Captain America's hotline
and soon Cap is on the scene. He reports the epidemic to the National
Guard and takes John and Ruth on his motorcycle to visit their
doctor's office, with deducing the Asthma Monster will try to destroy
the local supply of asthma medicine. On the way, Cap reveals that he
had asthma as a child too, and tell them how to deal with attacks.
At the doctor's office Cap battles the
baddie; the kids squirt inhalers in the villain's face, blinding him
so Cap can crack his helmet open. The Monster has an asthma attack
but refuses to take medicine for it; it turns out he hated his asthma
so much that he wanted to inflict it on everybody while he used his
protective helmet to breathe normally. As the cops take him away, the
Asthma Monster vows revenge—and Captain America and the kids vow to
be ready for him....