After working with Robert and still managing to keep up with school the entire year, all Trent and Ally want is a nice peaceful vacation. Unfortunately, that's not what they're going to get. Throughout their vacation, they will find themselves wrapped up in a case that's like no other case that they've experienced before. Instead of revolving around simple murder, this particular case is going to involve a much larger global threat. This time it isn't a question of if they're going to be able to solve this case. It's a question of who is going to be alive when the dust settles.