At school, a teacher discovers a girl has head lice. Her older brother comes to take her home, amid taunting by the other kids. While their mother is at work, her brother carefully takes care of his sister. First, he pulls like and nits from her hair so they can examine them under the microscope. He then goes to the pharmacy, gets the appropriate remedy, then takes her home and bathes her and washes and combs her hair for nits. The whole thing is quite entertaining and educational for him.