A Mass Effect crossover.

Millennia ago, Starswirl the Bearded, through his mastery of sorcery and engineering, constructed Equestria's first faster-than-light drive and ushered in a golden age of mared spaceflight- -but at a terrible cost.

Thousands of years later and seventeen years after the Reapers ravaged the Milky Way galaxy, a salvage crew discovers the wreckage of a mysterious vessel adrift with no apparent signs of technology and all occupants dead. Save for one.

Meanwhile, a young captain of the Equestrian space navy sent into deep space on a pointless naturalism survey mission seeks to prove herself by recovering a powerful and potentially dangerous component of the damaged vessel.