Valkyrie no Bouken: Toki no Kagi Densetsu

Once upon a time, in the world of Marvel Land, people and nature lived together in a peaceful and harmonic coexistence. All the animals were docile. Humans, Sandras, Quarkmen, Tattas, and other races mingled with one another and worked to make Marvel Land into an increasingly beautiful place to live. A large clock tower resembling a stone grandfather clock stood watch over the countryside of Marvel Land. Long ago, an ancient evil had been sealed within the clock tower. The people needn't fret, however. For those days had long since passed, or so they had thought.

The key of time that rested in the center of the face of the clock tower had long since been used to seal away the ancient evil that lies within. Until one day, the clock tower mysteriously stopped working. In an effort to rewind the clock, a villager takes it upon himself to do just that. Fumbling with the key, the villager drops the key of time, foolishly. In a frantic manner, the villager picks up the key and tries to reset it back into place before a catastrophe befalls Marvel Land. But then, it was too late for the villager to accomplish the task. The ancient evil of legend. Zouna, the Dark Wizard who manipulates time itself was unleashed upon the world once more. And to prevent anyone else from sealing him away once again, Zouna takes the key of time for himself.