The Realm of Equestria, on the Planet Equis, has enjoyed peace for over one thousand years. Under the rule of Princess Celestia and Princess Luna, their nation has prospered, and with the help of the Elements of Harmony, kept their home safe from the clutches of evil.

However, as all of Canterlot prepares for Princess Twilight Sparkle's upcoming Festival of Friendship, a malevolent villian, the Storm King, and his army prepare to attack Equestria to steal the magic of all four Alicorns and take over the realm.

The Storm King and his lieutenant, Tempest Shadow, have planned for every possible outcome, and his fleet is ready to attack at a moment's notice.

Except what the Storm King doesn't know is that there are others who are on their way to stand against them. The Guardians of the Traveler, Earth, and the Sol System, along with their allies in the Eliksni House of Light and the Cabal Deserters, are prepared to intervene against this threat.

The Storm King thinks himself a god, one above all others. The Guardians, who have slain gods, intend to prove him wrong.

A new age is coming to Equestria, and there is not one who is prepared for it.
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EDIT 9-19-2021-Republished due to going off Hiatus.
Destiny crossover (slight AU) with content from Destiny 2, set during the MLP Movie and after the Age of Triumph.
Roster of Guardians can be found here.