Dorian Gray is a young man so obsessed with his own youth and good looks that after a painting of him is done, makes a pact with the devil. The pact is that Gray gives his soul, and he stays young forever, his portrait aging.
I think if I could have focused on this more I would have enjoyed it better. Lord Henry is so very winded at times and goes on and on, but what he says is very interesting. I just couldn't focus on it enough to enjoy it.