What Is It?
The 2006 American epic magical realism romantic drama movie The Fountain.
This is how The IMDb describes this movie:
As a modern-day scientist, Tommy is struggling with mortality, desperately searching for the medical breakthrough that will save the life of his cancer-stricken wife, Izzi.
Three stories – one each from the past, present, and future – about men in pursuit of eternity with their love. A conquistador in Mayan country searches for the tree of life to free his captive queen; a medical researcher, working with various trees, looks for a cure that will save his dying wife; a space traveler, traveling with an aged tree encapsulated within a bubble, moves toward a dying star that’s wrapped in a nebula; he seeks eternity with his love. The stories intersect and parallel; the quests fail and succeed. —firstname.lastname@example.org