Brianna is so excited that she has been chosen to work with a famous geologist at Yellowstone all summer. She is hoping to learn a lot and film it all. But, shortly after arriving she and 3 others find out that the geologist has other plans for them - stopping the supervolcano under Yellowstone from erupting. Soon they are embarking on a dangerous mission involving digging tunnels and setting off explosives. But who are the other teens who are working at night and who is the boy with the ferrets? Things aren't making sense... are they actually helping or hurting.
There was a lot of action in this and wondering who to trust. For me, there was a lot of implausibility especially when the eruption started and they were only a mile away? I think I read the book too close to the eruption of Volcan del Fuego in my beloved Guatemala and the fact that so many unrealistically were able to survive and stop the volcano bothered me.