Memories is the fifth chapter of Slender: The Arrival.
This entire level shows the player what happened to Charlie Matheson Jr. before he became proxified. It begins with Charlie playing with his toys on the shore of Oakside Lake. His mother tells him that he has five more minutes to play before he eats lunch. Charlie then notices a toy shining in the sand and goes to pick it up. Then, he notices another toy and goes to pick that one up as well. Charlie continues to pick up toys (albeit going farther and farther away from his parents). He eventually reaches the woods on the other side of the lake. His parents realize that Charlie isn't where he once was and begin to call out his name. He becomes lost and feeling more and more scared while in the woods and eventually becomes ensnared in Slender Man's tentacles.