After the destroying the Flood on the Ark Spartan 117 Master Chief and his Ai partner Cortana are set adrift in deep space on board the severed half of the Forward Unto Dawn. Time passed and no UNSC rescue parties have come to recue them yet, but they soon find themselves crash land in Equestria which has evolved into the 21st Century under Twilight's leadership as new years of peace sprang up from the defeat of the Legion of Doom. However, a new evil is about rear its ugly head as robots created by an ancient alien race from another universe find their way to Terra planning to concur it in the memory of their fallen leader who was defeated by a human in a race. It's up to Master Chief and combined forces of the Equestrian military, Griffon Empire's military, a stranded Covenant Ship, the Swords of Sanghilios, and others including the UNSC Supercarrier Infinity to stop them.

It's a battle like never seen before as fates two universes hang in the balance. Can Chief save two worlds from destruction? Hope so cause a new fight is about to begin.

Additional tags:
Dark;
Princess Cadence;
Flurry Heart;
Luster Dawn;
Spike;