Far out in the ocean, where the water is as blue as the prettiest sapphire, is the deep undersea world of America. There lives the Sea King Alfred, his children and his subjects. The most beautiful flowers and plants grow there. Fishes, both large and small, swim between the coral reefs, as birds fly around the trees on land. In the deepest spot of all, stands the castle of the King Alfred. Its walls are built of coral, and the long, gothic windows are of the brightest, clearest, blue. The roof is formed of shells, that open and close as the water flows over them. They all live in the castle in peace and harmony. Until one day, one of King Alfred's daughters decides to interfere with the human world.
King Alfred is the great ruler of the undersea world of America. He is strong, and wise yet he always cares about his family and his subjects before himself. He always hated the human world as much as he hated his older brother Arthur the Sea Witch. To keep the undersea world safe, he made his kingdom in the deepest part of the ocean and made sure no one was to swim up to the human world. He has five daughters and four sons. His children are Flora, Samantha, Jacob Taylor, Oliver, Noah, Sophia, Diana, and the youngest one Kimberly.
Kimberly is the youngest of King Alfred's children and is also the most adventurous. She usually goes to explore the ocean with her very good friend Lon. She always comes back with a bag full of human treasures that she hides in her secret cavern. Then if she didn't understand what something was she would go up to the surface and ask her friend Calvin what it was. Kimberly is always interested in the human world and has been dying to just be able to swim up to the surface. She never gave much thought to love or romance till one human catches her eye.
Prince Magnolia of Mississippi is the youngest in the royal family. After his brother Weston's engagement, Francis had been trying to find him a wife but none of them seem to be of his taste. After a horrible shipwreck on the day of his birthday, Magnolia wakes up on the shore to the sound of a beautiful woman singing to him. As his faithful dog Jackson runs over to him, the beautiful woman disappears and he is left wondering who the woman is.
Arthur the Sea Witch hates his brother more than anything. He hated him ever since he took the throne and banished him from the kingdom. He swore that he would exact his revenge from Alfred one day and that day may come closer than you think. He has been keeping an eye on a certain little mermaid that would hold the key to his revenge and the throne. But he may have to send his henchmen Trent and Richard after her as motivation.