During a normal afternoon at Canterlot station, a gigantic train pulls in from the sky. It meets the ground with a loud clang and the rails buckle under the train's weight as it pulls into the station. The train stops with a hiss of steam and the cry of a whistle. The passenger car doors open but no one leaves the train. And with the arrival of the enormous locomotive it raises a few questions. What is a flying train doing in Equestria? And was this all by chance or was it a scheduled stop?

(This is my crossover idea on an old anime by the title of Galaxy Express 999.
Brace yourself for less than stellar grammar.)

For many years Equestria has lived through time unaware of what lies beyond the stars. Except for the flying military power known as the Wonder-Bolts. They've managed to keep one of the greatest secrets ever in Equestrian history, the Stargate. Although the Wonder-Bolts have left the Stargate locked up in an abandoned base to soon fall victim to the erosion of time, they've decided to start up the project to start once again. The Stargate base is now fully restored and ready for use but one issue remains. Protocol addresses that teams of different specialties must be organized before any gate travel is established. And the one team left to form is the infamous squad of reconnaissance and exploration, SE-1.

Note: not all rules of gate travel from the tv show (SG-1) will be used.