How is Mccandless's life change ?

The purpose of Jon Krakauer’s book is to address the matter of young Mccandless and his odd seclusion from society and a lifestyle that was all most people could ask for. McCandless always had privileges that few can claim. McCandless was just entering society, having graduated from Emory University, with more than $25,000 in savings and a family that loved him. The question of why he would completely break contact with all that he knew, give away everything he owned, and disappear to the Alaskan wilderness as a homeless man for two years drives Krakauer’s work.

I think the most important event that change the story and change Mccandless’s life is when he decided to leave every things behind him, his family, the comfort and money to be a loan only with himself, and from this point the plot has changed.