He Dafu, an ordinary young man who talks about being a train rider and saying "I'm all emo" every day, accidentally gets a "Life Restart Note" - as long as he writes down someone's name and "changing events" in the note, it can cause subtle changes in the other person's life trajectory.
This was supposed to be a beautiful thing, until he discovered that his fiancée Lin Xueer was actually a time traveler, and her true identity before time travel was the enemy who "rewrote her destiny" by him. What's even more fatal is that his neighbor Fatty Wang, who appears to be a simple and honest man, is actually his life-and-death enemy in his previous life, and is preparing to use Lin Xueer's memory loopholes to ruin his reputation.
He Dafu must use his modern Internet lingo that is always in the wrong place to survive in the cracks between the real and fake fiancée, the shady neighbor, and the mysterious organization. And the mastermind behind all this seems to be the "self" he writes about that he has never met...
