How on Earth?

Will Settles is an aerospace scientist who finds himself in such a situation, that he has to ask himself, How on earth did I get myself here? By here he means literally on the moon. His story begins with Will on his knees in full space gear with the second love of his life P.J. in his arms. P.J. is badly injured. He asked himself this question and begins to flash back on the events that took place on earth that truly got him on the moon with the woman of his dreams, who herself, is a world renowned astrophysicist .