In the wake of the Eltarian War, the Mighty Morphin team finds themselves exposed due to a decimated Command Center which has left their connection to the Morphin Grid, the Power Chamber, vulnerable to attack. The Power Rangers and Zordon embark on a desperate mission to the Lion Empire to secure a new Command Center before their enemies strike, cutting them off from their powers forever! In order to do so, they’ll need to leave behind one of their own, Rocky the Red Ranger, with only Promethea and the Green Ranger as backup to defend Earth.. But Rocky won’t be able to focus on taking care of his family for long as King Aradon of the Machine Kingdom and his forces invade Earth! Even with the Green Ranger by his side, will the Red Ranger be able to hold off Aradon’s Mechanical Minions long engouh for the rest of the Power Rangers to make it back in time?Collects Mighty Morphin #17-20.