The unofficial official sequel! What does Luna's son, a mare with a dark secret, two dragons, and a broken-horned unicorn have in common? Hunting down Twilight! But when a threat greater than the Storm King arises they must work together to stop it!

When Equestria is threatened by an ancient evil, the organization Z.O.D.I.A.C. must rise to meet the challenge. Join flightless pegasus and secret agent, Scarlet Thorn, in Z.O.D.I.A.C.'s war against a force far worse than anything from Tartarus.