The Phoenix.

The Phoenix is a tale that takes place in the not so distant future. Mankind has developed the ability to transfer the mind and soul of a human being into an android host body. Mars Reveille is a dying man whose life is now moment to moment. He decides to undergo this miraculous procedure for the sake of his grandson Ben, who, without his grandpa would be alone in this world and left to fend for himself. Mars' transformation is a success but the connection to his grandson is frayed and there are quiet gnawing doubts if Mars is real at all. Mars and Ben decide to go on a hiking trip to try and rebuild the connection they once had in this strange new reality.