Hero Ed Speleers works as a ticket inspector in an overnight passenger train. One day, when he is on duty and the train travels through a remote forest area, a deer runs onto the track and loses its life. So, the engine driver, Sean Pertwee, stops the train there and gets down to clear the track.
When he is busy clearing the track, he gets killed by a humanoid wolf. Without knowing the truth, the passengers think that the driver has absconded and requests Ed Speleers to allow them to get down from the train. But, their requests are rejected.
In this situation, the humanoid wolves try to hit all the passengers and take them as their prey. What happens next and whether the passengers are able to escape from the beasts are narrated in the rest of the movie.
With the major portions of the movie shot in a running train, the initial part moves very slow with the love, romance sequences and the conversations of the passengers. But, when the wild beasts start terrorizing the travelers, the movie picks pace like a running train. The director is able to create the involvement and the fear factor among the viewers with each and every scene. However, the artists are not visible as the story happens post midnight.
The background score is a massive strength to the film which helps maintain the momentum and all actors have done their best in emoting their feelings.
On the whole, Howl gives the audience, a real, terrific feeling.