When Canterlot is under attack, the Royal Guard spring into action to protect the citizens. Even the guards who have been put out to pasture long ago are willing to risk all they have in order to respond to the bugle's last call.
A changeling solider by the name of Sylen has worked hard to earn his place among Chrysalis' hive. But now he must choose between his loyalty to the hive or sticking true to what he feels is right.