As Twilight investigate ancient ruins of a possible alien race in Zebrica, she gets more than what she bargained for when she is teleported light years away. She now finds herself fighting not only for herself but an entire species including her own as she aids a human super soldier know as the 'Master Chief' fight to prevent total annihilation on a mysterious ring world called 'Halo'.

Halo: Combat Evolved crossover with MLP FIM. Based on Gyvon fic, Halo: On the wings of Angels. If you haven't read that one yet ( Doubt it.) Then you should go read it.