Plot

A Los Angeles subway train is brought to a slamming stop, the tunnel partially collapsed, and several people injured. The survivors must figure out what caused it, and must deal with the greater danger that soon faces them.

Terrified commuters are on the ride of their lives when terrorists send a subway train speeding out of control during rush hour. With the saboteur among them, a group of citizens are now trapped underground and in a race against time if they hope to see daylight again. Full of fast-paced action and suspense, Redline is a thriller that will have you holding on for safety.—Anonymous

Tori is on the phone with her father and they are not getting along. So she is pretty upset already when she gets on the subway. At some point the audience learns about others who are getting on the subway too, or at least this appears to be the case Some of these people might not be telling the truth. But here is what the audience believes. Adam proposes to Rubina and is giving her a ring, but they are Muslim and a ring is not a part of their tradition. Boyd is an actor. Mason is a veteran of Iraq. Al is an engineering student of Brazilian heritage. Sam is a history teacher who is married to Kathy. Yolanda is a medical professional of some kind who can't speak much English. And Jared and Kristine have a young daughter Dillon.

Something terrible happens and people die. At first it appeared there was a shooter but it later becomes clear there must have been an explosion. Apparently the train car is on its side and there's no easy way out. There is no one in charge and these ordinary people have to find the solutions to their problems. Some are hurt enough that they might die. Tori calms down and copes quite well. Jared thinks Kristine (who stays remarkably calm considering everything) is worse off than Adam and insists Kristine be helped first. Whatever is wrong with Kristine, something is always blurry in the edited for TV version. The important thing is Kristine is trapped. So is Sam, but he isn't hurt, as long as he can be freed. Kathy is dead and so is a police officer.

Eventually, everyone who is able to help can get involved. Yolanda, as the only one who seems to have medical training, does what she can, and Kristine can translate for her, but help is needed from outside and the group needs a way to escape. So there is a lot of work to do, and risks must be taken.

And then someone discovers a second bomb. Worse yet, what if one of the group set off the first bomb and is ready to kill more people? What if the terrorist actually intends to commit suicide and does not have a way out? The group must deal with many moral dilemmas. Should they figure out who did the deed and keep that person from killing again? How much should they do to this person? And what if more than one of them might be involved?