Everything is set in stone. The entirety of the universe has a predetermined outcome; Every aspect of your being, every thought you've had since birth was a result of forces outside of your control. There is no such thing as free will, there is no such thing as self determination, there is no God. You are a lonely raft with no paddles stuck in a raging torrent in a river delta, your final destination unknown to you. The only options you have are to ride it out until the end or to jump off and sink to the bottom, and even your choice of whether to jump or not was already predetermined.
We are basically living in a movie we have never seen before, nobody knows the ending, but no matter how many times you watch it the ending will never change.