Most sci-fi films use their futuristic hook to convey some sort of moral. With this being a constant, Source Code, the latest film from director Duncan Jones and actor Jake Gyllenhaal, showcases the most uplifting message I have seen in a film.

Of course the film, which was released April 1, has much more going for it than that. Excellent acting and a top-notch script make Source Code the most enjoyable film I?ve seen in a while.

The movie opens with Air Force Captain Colter Stevens (Gyllenhaal) waking up on a train he does not remember boarding. Things get even more complicated when the woman sitting across from him, Christina (Michelle Monaghan), acts like she knows who he is.

Confused, he looks in a mirror and discovers that he is in the body of a history teacher named Sean Fentress. Before he discovers why any of this is happening, the train explodes, killing everybody on board.

Colter wakes up again in a strange pod, this time inhabiting his own body. A military general named Colleen Goodman (Vera Farmiga) appears on a screen in front of him to explain what is going on.

He is in a computer program called the “Source Code,” which allows him to go back in time and relive the last eight minutes of another person?s life. He cannot alter events or save anyone. As Dr. Rutledge (Jeffrey Wright) explains, ?The Source Code is not time travel. It is time reassignment.?

Colter must go back in time and find out who destroyed the train so that the bomber?s next attack, a plan to detonate a nuclear bomb in downtown Chicago, can be prevented.

The film definitely had the opportunity to become extremely repetitive. Many films before have tried a similar concept — most recently, D