There's a big test coming up, so the Ranger Teens head up to Billy's Uncle's cabin up in the mountains to cram. Goldar uses this brain-storming session to his advantage, by manipulating their dreams with the Crystal Of Nightmares. Their worst fears are played out in their dreams, causing them to be completely paranoid and afraid when they wake up. Against their current states of mind, Zordon has them seek out the Crystal, and destroy it. Overcoming their overwhelming self-doubts, our heroes shatter the crystal, and likely pass more than one tests.