Long ago, in a distant land beyond Equestria, Lord Tirek was once the disciple of a centaur called Sendak, who promised the possibility of extracting Equestrian magic. After Sendak was captured by his father, Tirek sets out to do what his master could not: become an unstoppable force of nature.

Before he leaves, his nervous, unambitious brother Scorpan comes to him, pleading with him to stop. In the resulting exchange, Tirek and Scorpan become more than brothers. They become master and disciple.

Bonds between brothers become broken. And Tirek will discover what Scorpan really means to him.