Theme of Eye of minds

This book can have multiple themes, but this is one that I have thought about is friendship can get you through anything. I thought this because Michael Bryson and Sarah are very good friends and when they are asked to take down this hacker in the virtnet. They would hack because they thought the rules of the game were boring, but they wouldn't do anything bad. They go an adventure to try and find Kaine (the main antagonist). But something happens to Sarah and Bryson so they cant go on and Michael has to go on the adventure on by himself.