The book The Explorers is about a group of friends that decides to go halfway across the world to save a friend named Sebastian. In the book, the group of kids meet a famous explorer named Catherine who promised to help them find Sebastian. The group flies over to Korea to find Sebastian and the only thing left for the group now is to find Evie’s grandfather who is somewhere he could be in danger. They run into small problems they have to solve like taking a shark out of a backyard pool and finding a way to take the shark to the aquarium.