Bob, John and Edward--three young boys who grow up in the same neighborhood-- have vastly different experiences with sex. Bob`s father patiently explains "the birds and the bees" to him, and even takes him to a hospital to see the effects of venereal disease. John`s and Edward`s parents don`t tell them anything, leaving it to the boys to find out "on the streets". Consequently, when they become adults, John--who`s been "playing the field"--contracts syphilis and is stopped from marrying and infecting his sweetheart. Edward, on the other hand, has become addicted to "self-love" and masturbates himself into an insane asylum. Wholesome Bob marries and, naturally, lives happily ever after.