A Shy Farewell

You, the only human in Equestria find a way back home, but someone will hold you off, before it's too late.

You, a great, famous scientist, after many years of being stuck in Equestria, find a way to return home, the only problem is that there is no way back.

Something, or someone, will try to stop you, even though it will be a benefit to everyone... Except for one pony.