Something is stirring beneath Canterlot.
Assigned by his monarch to eradicate the remnants of the Changeling swarm, Shining Armour and the soldiers of the Celestial Guard push deep into the sewers in search of the shattered army. Alone, isolated, and buried beneath the surface of the world, Shining Armour fails to realise that he is not the hunter of this mission, but the hunted.
Shining Armour searches within the depths of the Everfree for his target, unaware he has become the Nightmare's Tribute.
Shining Armour plunges the depths of the Canterlot sewers for the remnants of the Changeling swarm; unaware that he holds the attention of their queen.
Sent north to secure an alliance with the Crystal Empire by any means necessary, Shining Armour has his first encounter with the beautiful, yet dark, Queen Umbra