This question will have different answers to it, but I thin you could find some level of common ground in what is articulated. I think one of the major events would be the trial, itself. Examining Stevie's state of mind during the trial through his own perceptions, the perspectives of the prosecutor and his own lawyer could also constitute as major events. A major event that is never really answered because it cannot would be whether Stevie actually committed the crime with which he is charged. Is he the "monster" as he is depicted? Certainly, the time he spends in his cell would constitute as another major event along with the verdict of the trial.