'Sudden Death' is just a theme park thrill ride.

Until it's not.

Fresh off his first Marine deployment, Boone is given a choice between two career paths: Intelligence or Scout Sniper.

Though he's shown clear aptitude for the second, he's not sure he has what it takes to do the job.

When he puts the decision aside to join his buddies on a day of leave, the last thing Boone expects to see is a naval weapons locker in the hands of a man who is clearly not Navy. On impulse, he shadows the man, only to find himself running for his life... smack into a Unit operator.

Now he has two options: join the fight or remain behind. But the choice he's been given is really no choice at all. For the only way to save the park is for Boone to embrace his calling.

The fate of thousands rests on this one decision.

He'd better make it a good one.