Set just before Tirek's debut.

Many stories of old tell of a centaur named Tirek who stole the magic of others in an attempt to take over all of Equus. Tirek and Scorpan were so close, they were in many ways more like brothers. Such stories tell that Tirek was so strong, that it took Tirek's dear friend, Scorpan, betraying him and telling Celestia and Luna of his plans. Tirek vowed that eventually he would escape his prison in Tartarus and finish what he started.

However, the stories tell that Tirek is the last of his kind, yet right beside him in the darkest part of Tartarus is another centaur. Asmund was imprisoned alongside Tirek, for fear of him following in the older centaur's hoof prints. The two lived beside one another, silently waiting for and opportunityof escape after Asmund willingly sacrifices his magic to Tirek in exchange for Asmund escaping with him. With their deal bound by blood, Tirek escapes with Asmund in tow. Perhaps with so much time spent beside each other, their little oath could turn into something more.