The well-known artist Basil Hallward meets Dorian Gray, a rich, cultured and beautiful young man. Basil is immediately struck by his beauty so he starts doing some paintings of him.
One painting is especially beautiful, but Lord Henry, Dorian's lustful friend, doesn't like it.
You are certainly beautiful and young, but beauty is only transient and sooner or later you'll get old.
OH NO! Then I wish my portrait might get old and I remain young forever!!
Under the influence of Lord Henry, Dorian dedicates his life to pleasure and sins, so while he remains young and beautiful, the picture grows old and ugly.
You neet to destroy the painting, Dorian!! It's evil!
Dorian decides to stab the portrait: as a consequence, the picture returns young and beautiful while Dorian dies.