When Serafim, a highly trained warrior from a far away universe, stumbled upon Equestria after tracking his nemesis' energy trails there, he finds himself defending not only his own species, but for another, as well. He will encounter many more challenges ahead of him and is helped by the country's well-known leader, Princess Celestia, who is now still grieving over the lost of her sister.

But with his doubt against these newfound species, can he fit in with them, will he be a reject, or a hero? Will these newfound species also think of him the same? Doubting him and untrusting him, what will become of his new adventure?
His adventure in this new world had just begun and the hunt for his nemesis had also begun as well.

(cheesy, but i'll think of more things)