The Dangerous Snake and Reptile club, with the help of a boy visiting the neighborhood, sets up equipment in the clubhouse in hopes of tracking flying saucers and making contact with aliens.
Danny, Robert, Mike, and their friends form a club collect and display a dinosaur bone, tadpoles, and a king snake that the brothers found on vacation, as well as creatures from their neighborhood.
When several homing pigeons need a new home, a group of boys and girls adopt them and start the "Mighty Pigeon Club, " only to find that they have taken on more than they bargained for.