Take an interdimensional traveler, sabotage his escape route, and have him land in Equestria. Then have the attempt to save him basically almost kill him completely, and you have the beginnings of beautiful friendships. Right?

We've all heard the stories about how Gods can do whatever they like, simply because they're Gods. They don't care about the consequences, because surely they can fix their problems by themselves. So when Arceus steals all the good in the realm...