Some years later, Willow goes looking for Oz. Tara is dead, and things didn't work out with Kennedy, and she's been struck by a fit of nostalgia.
When she finds him, he's not Oz any more. He left that behind in Sunnydale, when he went away for the last time, with his friends and his band and his life, and now it's buried beyond anyone's reach.
He calls himself Danny now, and he's… changed. But Danny has one thing in common with the man he was: he still loves Willow.
And Willow thinks… perhaps… it's not too late, after all.