Kari’s been having strange dreams lately, ones she refuses to share even with her closest friends. Gatomon confides in Patamon about Kari’s troubled sleep, but no one anticipates how deep her fears run. During class, Kari begins to fade—literally—into a foggy, waterlogged dimension. Though she dismisses it as a dream, the eerie vision becomes reality when she suddenly vanishes into another world, leaving behind only her bag.
In this dark, subdued place, Kari meets the Scubamon, creatures trapped under the control of the Digimon Emperor’s dark spirals. They plead for her help, drawn to her light, but their motives soon turn sinister. As the Scubamon’s desperation grows, a shadowy force looms—Dragomon, their undersea master, hinted to be watching and waiting.
Meanwhile, T.K., wracked with guilt over Kari’s disappearance, leads Gatomon and Patamon to search for her. Their determination takes them to the mysterious dimension where they join Kari in battle. With Pegasusmon and Angewomon fighting at her side, they destroy the Control Spire and free the Scubamon from the spirals. But freedom comes with a price: the Scubamon reveal their true intent, asking Kari to become their queen. When she refuses, they retreat, warning that their master will come for her.
Back in the real world, Kari and T.K. share a heartfelt moment, but the danger of the Dark Ocean lingers. As Dragomon’s menacing silhouette rises from the depths, the episode closes with an ominous growl, leaving the DigiDestined to wonder what lies ahead.
This chilling episode blends suspense, emotional depth, and eerie foreshadowing, making His Master’s Voice one of Digimon Adventure 2’s most unforgettable chapters.