(Byler) Ever since Lonnie left, the Wheelers and the Byers have spent Christmas together. But even after everything that happened, with the upside down and Eleven and after the Byers moved. One thing stayed the same, Mike and Will where unusually close for two boys in the 80's...

Will and Mike disappear and their friends assume the worst. But it becomes clearer and clearer when they begin to find audio memos and journal entries from the two boys, which reveals the pain everyone so callously and carelessly ignore. But they understand how they have each individually hurt the boys.