In AnxietyTale, sans killed Frisk at the beginning after they reset a genocide run.
Toriel Is furious at sans, and tries to kill him for breaking his promise. But Papyrus saved sans, dying in the process.
The main plot takes place years later, when a young traveler named "Sam" falls down Mt.ebbott
Meeting a lonely and paranoid flowey, who at first thinks Sam is Frisk, but realises she is not.
The Story follows Sans, Sam, and Flowey as they try to get Flowey to his father.
There are currently 9 chapters and a comic in the making.