In the storyline, a ghostly hydra that was previously sealed by Pocky has returned, prompting the trio to take action. The game is structured into levels referred to as chapters, where players navigate through various enemies to reach and defeat a boss at the end of each chapter. To access the boss, players must first find a key within the level. Throughout their journey, players can collect power-ups that boost their character’s attacks, enhance their defensive capabilities, or help in destroying enemies.