Jolly the jellyfish and his sidekick, Sammy the seahorse, embark on a grand adventure through the ocean's four zones: the Sunlight, Twilight, Midnight, and Abyssal depths. As they descend, they encounter fascinating creatures unique to each layer, from the colorful fish of the surface to the mysterious bioluminescent beings of the deep. It's an epic journey of self-discovery, where this unlikely duo learns about the vast, diverse world beneath the waves.