This guy has weird friends. Friend plans Christmas party. He wakes up the next morning and his friends are normal and don't know him. Goes and tries to find friends to get them to a room because of a bookmark talking about a program on a PC. Manages to convince a friend that they met before, by using alias 'John Smith'. Discusses with friend and other friend why he remembers things differently. Get other friends to room. Presses enter on PC. Traveled to same place from before but three years before. Meets adult version of a friend. Gives him a thing that fixes the issue. Sent to time things changed. Finds out another friend did it. Got stabbed when trying to fix by someone else. Saved by friend and her adult version as well as a future version of himself. Wakes up in hospital with his friends around him as they were before everything, though think he was in a coma for a few days due to falling down some stairs.