Superman. What Happened to the Man of Tomorrow?

He is the embodiment of hope. The Man of Steel. The last son of Krypton, who for many years has borne the burden of protecting all of humanity.
But one day Superman was gone… He perished ten years ago.
Humble reporter of the “Daily Planet” Tim Crane visits Mrs. Lois Elliott, once a famous journalist in Metropolis, who now lives a quiet and peaceful life in a Midwestern town with her hardworking husband and small son. Crane wants to interview Lois about Superman's last days: after all, she was by the hero's side when his most vicious enemies conspired and dealt him a crushing blow. This time was crucial. Then the greatest defender of the world finished his earthly journey…
It's not easy to remember the tragedy, but Lois needs to gather her strength and finally answer the question that interests millions of people: WHAT HAPPENED TO THE MAN OF TOMORROW?