No, you won't get CGI, explosions and budding romance from this film. It's from an emerging genre - films for oldies - think Best Exotic Marigold Hotel (which I loved), Quartet (which I didn't) and Amour, to which it has been compared.
Except to say, it's a compelling story, tightly written, with exceptional performances, which should interest most people, of any age, as long as you don't solely crave superhero sequels.
On one hand, this is a tale, based on a true story, of the short-sightedness of bureaucracy. Who hasn't fought red tape, at some point in their lives? On another, it's about trusting each other and allowing those with fading powers to live the life they want to live for as long as possible.