The animation and lip sync was good most of the time.
The story was well thought out, a good length, and made sense.
Though, the whole "time travel thing to prevent something from happening" idea has been overdone lately. Thats kind of the trademark of Rick and Morty on Cartoon Network and maybe in Family Guy with Brian and Stewie.
The line quality in most of the scenes (especially on the two main characters" was too thick and needs to be thinned down.