Horizon is a feature-length fan film three years in the making. Set during the time of Enterprise (the fifth Star Trek series). The Coalition of Planets, a young alliance of worlds led by Earth, is at war with the Romulan Empire. Desperate for a chance to gain the upper hand in the war, the Coalition forms an alliance with T’mar, a Romulan deserter, in the hopes that she can provide valuable intelligence on her former masters.