Donut Joe, formerly known as Con Mane, is brought out of retirement by Mane6 to locate his former partner who has gone missing in Janeighca. Joe teams up with a Pegasus and a Zebra to investigate, but enemies await him across the entire island.

DISCORD has returned with their most deadly scheme yet! A stolen weapon has put all of Equestria in danger and Con Mane has mere days to find it. He must traverse the underwater realm of Aquastria in order to put a stop to an evil king and his plans!

Agent Con Mane is sent by Princess Luna to investigate the Captain of the Lunar Guard, Stellar Nightfeather. In the night skies of Cloudsdale in the New Lunar Republic, Joe will have to face his inner fears to save Equestria from an eternal Nightmare

A filly living in the Griffon Kingdom contacts Mane6 and says she is willing to defect to Equestria along with a long sought after spell book. Her one condition? That Con Mane be the agent that escorts her to Equestria.