I Don't own Harry Potter or anything related to it.
Mr. and Mrs. Dursley were very normal. Vernon Dursley was director of a company. Petunia Dursley was a stay at home wife and mother. They had a young son named Dudley. Dudley could do no wrong in their eyes. The Dursley's were perfectly happy being a normal upper-middle class family. They owned a house in the suburbs of Surrey. It was a house exactly like all the others in the neighborhood.
One morning, something happened that would change the Dursley families normal lives forever. Mrs. Dursley opened the front door to find a child left on the front step. She screamed and called for her husband. Vernon raced down stairs and stared in disbelief at the child on the step. Petunia lifted the child up while Vernon put in a call to the police.
There was a note left with the child from one Albus Dumbledore. The note stated that the boy was Harry Potter. It also told of the deaths of the child's parents James Potter and Lilly Potter, Petunia's younger sister. The police were given a report on the child's state and identity. Harry was taken to the hospital to find out his condition.
The doctors at the hospital kept Harry for observation as he had become extremely chilled at being left outside all night. There was a possibility of him catching Pneumonia, which would be extremely dangerous in one his age. After a few days Harry was allowed to return to the Dursley's home with some medication for the next few weeks.
The Dursley's filled out the required paperwork and became Harry's legal guardians. All attempts to contact Mr. Dumbledore were met with failure.