The Scorch Trials picks up immediately after the events of the first film. Thomas (Dylan O'Brien) and the rest of the gladers have been rescued from the maze. They're taken in a helicopter to a large and very secure base. It's here they meet Janson (Aidan Gillen), the man who claims he's responsible for rescuing them. He provides them with food, water, beds and showers, putting them in with other maze survivors. But Thomas is suspicious. Breaking out of his room and exploring the vents, Thomas' suspicions are proven true. He hatches up a plan to escape, and the other gladers come along too. Leaving the "safety" of the facility, they're forced out into the scorch, where plenty of other dangers await, and even a little mystery.
That being said, there never is any closure on what actually went on in the first film. The last thing we saw was the villainous Ava (Patricia Clarkson) revealing the maze was just the beginning and that phase 2 was currently underway. Does this get explained in any further detail? Absolutely not. There are minor comments on the future of these kid's lives and why they were saved, but nothing I would go so far as to say is a revelation. It's just reassurances of what we already know. What was the point of the maze? Why was that phase 1? Phase 2 can't be just blood tests can it? Is that seriously it? I have absolutely no idea.
That's the thing about this movie, too. Nobody gets enough screen time, with the exception of Thomas, our main character. Kaya Scodelario, who plays Teresa, gets about six minutes of screen time, most of which is her staring off dramatically at something. No matter what I said about her acting in the first film, she's an interesting character, and even more so here. It's not until the third act that her character does anything, and the one thing she does felt extremely out of character. It just comes out of nowhere, simply put in there to have an explosive finale before a cliffhanger you can see a mile off.
One of the major plots from this movie revolves around this disease that turns people into what I can safely say are some sort of zombie. Think Last of Us meets World War Z. Yeah, you're pretty much screwed if one comes close. Like most of the film, they're in it without explanation or cause, but they do make for some fun moments. There's a rather tense scene about halfway through that involves a chase between two lead characters and a whole hoard of these creatures, ending with a very Lost World: Jurassic Park moment. It's scenes like this that are rather entertaining to watch. Not scenes where Thomas takes some sort of drugged alcohol and goes clubbing with Alan Tudyk from Firefly.... because that happens.