Six years after the events of Family of Two. Darkstar and his family have moved to the Imperium with Empress Luna to start a new life. Stardancer is growing and will be starting Luna's School for the Gifted while her mothers are going to be expecting soon. Darkstar still visits with his older crowned princess sister as much as a commander of the armed forces for the Lunar Imperium can.

While on a peaceful mission to Equestria he hears news of Shining Armors escape and not long afterwards an attack on the Imperium itself by, Equestrians?