text: OK, best as I can figure it out, there's this doctor working on trying to find a cure for his wife's tumor. She writes a book (except for the ending) about the Queen of Spain, a Conquistador and the Tree of Life. The doctor's unconscious (or "higher self") becomes obsessed with the idea of renewal, rebirth, etc. so he's fantasizing (dreaming) about being in a bubble and heading towards the nebula that's supposed to bring renewal and rebirth, thinking if he can save the tree of life (which has hairs on it like his wife Izzie has on her neck) then he can save Izzie.\n\nHe fails in saving Izzie and regrets not having gone with her to walk in the snow when she invited him so he imagines that he did walk with her and that he visits her grve and plants an acorn which will grow out of her just as the tree of life grew out of 1st father.\n\nI don't think we were actually supposed to understand it but just sit back and enjoy the cinematography!