A group of heroes comes together to stop Lord Aizen, the leader of a powerful organization who seeks to use the artifact to conquer the world. Despite their differing motives and personal goals, they must fight side by side to prevent the world from being destroyed.

Kaito, a young swordsman, and Seira, a mysterious girl with magical powers, embark on a perilous journey to find a magical artifact that can control time. Their goal is to change the past and prevent tragedies, but along the way, they begin to question whether altering time is worth the risks.