[General System Activated! Welcome to Planet Castia] Two hours after getting his first girlfriend, Jed's life turns upside down when he's chosen to be among the first youth to explore Planet Castia. At the last minute, he's informed the mission is not just explorationary, but the start of the colonisation of the planet which is already inhabitated. Not wanting to be among those who'll ruin the lives of the innocent Castians, he refuses but is forced to go. As if that isn't bad enough, he has to go with the weirdest team. Jed can't wait to finish the mission and return home but things get complicated...