The ponies of Equestria have long hoped to travel among the stars. For as long as Equis has existed, they have been firmly planted on their isolated world.

However, when a mysterious machine is discovered beneath Canterlot mountain after the Storm King's defeat, revealing the key to interstellar travel, their foothold weakens....and the Equestrians take their first steps into the universe. However, when they arrive in a distant Star System, they find themselves at the doorstep of a once proud civilization, consumed by Darkness. And the inhabitants are less than trusting of their arrivals...
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The Last City. The sole bastion and cradle of Humanity. It has endured for centuries under the protection of the Traveler. The Guardians, the Chosen of the Light, defend it against any threat, no matter how Dark.

But when beings from beyond come to the City, it is unclear if they are friend...or foe.
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Destiny crossover, will have elements and concepts from Destiny 2. Will have blood and swearing.