You are an 19 year old girl who walking down a street when someone attacks you. After defeating your attackers, cause you're a bad ass, a tall man appears. You become very close with each other. But something happens and your entire life changes.
When a mishap in a reset happens and a character from another version is transported into the current world and timeline, what happens? Gaster!Sans, bad-skele-boy from EchoTale is confused to see that he had landed in a different, yet familiar world: Undertale! Apparently, in meeting with his 'original' version, they...