The plot of the play is kept the same as the book. If you have not read the book, it is about a handsome, impressionable young boy that gets his portrait painted by his artist friend, Basil Hallward.
It is during these painting sessions that he meets the philosophical Lord Henry Wotton. He has influenced Dorian with his hedonistic beliefs and in turn, instilled a fear of growing old and ugly in the young boy.
When the portrait is done, Dorian realizes that he will never be as young and beautiful as he was in the portrait. However, later, he discovers something radical about it which would alter his life forever.
I will stop here because I don’t want to spoil too much of the story and it would give you an incentive to watch this masterpiece of a play or even pick up the favourite book of mine!