When a sprite named Crysta shrinks a human boy, Zak, down to her size, he vows to help the magical fairy folk stop a greedy logging company from destroying their home: the pristine rainforest known as FernGully. Zak and his new friends fight to defend FernGully from lumberjacks — and the vengeful spirit they accidentally unleash after chopping down a magic tree.
As a lone spaceship proceeds on its long voyage across space, the crew are surprised to encounter a strange pyramid form. Surprise turns to horror as one by one, they discover that their darkest nightmares are all starting to become real. The pyramid has to be behind it all somehow, but how can they save themselves from its influence?
King Arthur, accompanied by his squire, recruits his Knights of the Round Table, including Sir Bedevere the Wise, Sir Lancelot the Brave, Sir Robin the Not-Quite-So-Brave-As-Sir-Lancelot and Sir Galahad the Pure. On the way, Arthur battles the Black Knight who, despite having had all his limbs chopped off, insists he can still fight. They reach Camelot, but Arthur decides not to enter, as "it is a silly place".