Episodes 20-25 from this franchise of the long-running children's sci-fi adventure series. Five brave teens set out on a global treasure hunt to track down five long-lost jewels from the Corona Aurora, Crown of the Gods. They must decode mind-crunching puzzles, embark on mythical adventures and overcome spectacular battles, or Dark Forces will wear the Crown and evil will be unstoppable. In this fourth volume, the Power Rangers must recover the Star of Isis. But when a band of foes disrupts the Rangers' connection to the morphing grid, it forces the team to work together to find the Centurion Torch - a strange stone tablet which may hold the key to solving many of the mysteries that perplex them. The fate of the entire universe rests in the hands of the intrepid heroes... Episodes comprise: 'Once a Ranger (1)', 'Once a Ranger (2)', 'One Fine Day', 'Ronny On Empty (1)', 'Ronny On Empty (2)' and 'Things Not Said'.