After Zeus sank Atlantis beneath the waves, its surviving descendant Nereus founded an undersea kingdom whose fifty daughters, the Nereids, hold fairy-like powers. With the sea god Poseidon threatening to wipe the kingdom out, the king sends his daughters leaping through time to different eras, at the cost of much of their memory. Four young sisters end up together in the same era, where they pass their days free of worry. This one-episode CG comedy fantasy special is voiced by the voice actor idol group GuilDrops.