After defeating an attempt by Chrysalis to take over Equestria and dealing with the invading forces of the Storm King, Mark Wells hoped that he and his friends could settle down for peace and quiet for a while. However, the human-turned-pegacorn prince must cope with an assassin, a fanatically ambitious mare, changeling Queens, and an alliance of his most powerful foes. But possibly the most frightening challenge is his venture into parenthood.

Book Three of "Off The Mark" series brings to a conclusion the arc of Mark Wells' evolution from a hapless transformed human to one of the most influential beings in his new world. Along the way, he not only revolutionizes the relationships between species and nations, but also those of the mares closest to him.