(Indirect sequel to "The Power Ponies: Birth of a Mane-Iac".) Hum-Drum is given a task from The Mane-Iac to retrieve an important shipment. And this is because The Mane-Iac claims she is dying, and only that shipment can save her life.
Set in the Power Ponies universe. Hum Drum breaks The Mane-iac's heart, so she decides a little payback is in order. Starting with her former love interest for obvious reasons.