Once a Ranger (2) Mighty Morphin Power Rangers : Season 15 Episode 21

No longer having Ranger powers, the former Overdrive Rangers return to their civilian lives. All but Mack, who learns of Thrax's plans to destroy the Sentinel Knight, and seeks out the only item capable of doing so, the legendary sword Excelsior. Meanwhile, their replacements, the team of Returning Rangers, head to Angel Grove to seek out the only being capable of repairing the Morphing Grid: Alpha 6