Ariel is a teenaged mermaid who lives under the sea with her father, the sea king, her six sisters and various friends. Together, they try to keep harm away from Atlantica as enemies try to ruin their peaceful kingdom. Ariel takes viewers on underwater adventures into caves, meeting humans, and singing songs. Among Ariel's animal friends are Sebastian, a crab who acts as a baby-sitter for Ariel, and Ariel's best friend, a tropical fish named Flounder. Based on the popular 1989 Disney animated feature film.