So this idea is 2 books or more long.
The first book is about a boy who goes on an adventure, but weird circumstances keep happening around him. He usually ignores them. Until one day, it goes too far and hurts the people he cares about.
For the 2nd book, he seeks answers from the Seer of Fate. When he learns the truth. (It can be whatever you want.) He goes on another adventure, to seek the person/people responsible for the weird things that happen around him.
Maybe in the 3rd book, the boy confronts the being/beings. They then give him some tasks to do around the universe.
1 task equals 1 book each.
The series ends with the boy learning the truth about the universe and having to choose between two choices.