In the book Mission Unstoppable, by Dan Gutman, the characters Coke and Pepsi walk into a huge mess when they decide to walk home from school instead of taking the bus. On that day, when they were followed  they had gotten only a clue that someone wanted them dead. The second clue was when they got detention and got locked in the room and the teacher started a fire. the last clue is when the janitor bones told them why everything had happend and the hideout blew up. those are the main events that happend so far.