Well immigrants synonyms...emigrants? Newcomer? Foreigner? Outsider?
The overall point is that everyone he cared about is dead and his life is ending.
The book always has more details, although for some people when reading a book its hard to find a vivid picture in their head. So the trailer includes a few key points to the book but the book has all the answers. The trailer has a strong meaning and many viewers love it but I would add some more sensory details.
hoped this helped:D
