We know that Michael, and his friends, Kai, Damon and Will are out to get revenge for something that happened three years ago. All that is revealed to us is that something serious happened, leading to the arrest of Michael's three friends, and that you are partially involved.

You were arriving home, when repairing some parts of your sofa and table with coarse salt, you look around, and remember what Damon told you before going to jail "your house will rain coarse salt, you witch!

created by @railanyee I just translated it to our English!