So, the basis of the story (given to me by Nova4Star like a minute a go) is that Sans's powers were accidentally transferred to Alphys while they were testing a device that was supposed to make their consciouses switch bodies like in the Animes. They would try to give them back, but until they figure out what went wrong, they don't think it would be safe to try again. So now Sans has to teach Alphys how to control his powers, deal with having to walk everywhere without the benefit of teleportation, all the while trying to dodge Alphys's questions as to why exactly he has so much power, and why he doesn't use it. 

     Anyone else is welcome to use this idea, I think it's pretty cool, just do whatever. Imma call it Powertale because I'M ORIGINAL! 👍

     Anyways, remember, reality is an illusion the universe is a lie buy gold BYE PERSONS!
     ~Time Shadow