It's hard to escape when you don't know where you're going.
Fresh out of high school, Helio, Jessy, Noah, and Beth are all scrambling to figure out what comes next. A mini-semester abroad in Iceland before college really starts seems like a good answer, or at least like a good way to put off having to find a real answer.
Following the local head scientist into his volcanic laboratory seems like a good idea too. Until the world cracks open beneath their feet.