I'm sorry, this is a short-answer forum. We do not write student essays. You might want to begin by reading through Gradesaver's short-summary for the novel, while concentrating on the novel's main conflict, which centers around Tom's fear that Injun Joe is trying to kill him, and he and Huck's desire to find Injun Joe's gold (treasure). The boys get into more than a few tight places, but they come out alright in the end. If you have any further text related questions, feel free to come back and ask them here. As for making predictions, those need to your opinion, not mine. I've read the novel numerous times.... I know what's going to happen...... I know the outcome.
http://www.gradesaver.com/the-adventures-of-tom-sawyer/study-guide/summary