Ariel's sister Adella is having a birthday celebration. It's going to be a fun-filled day complete with a birthday concert, and Ariel is excited about visiting her family. She only wishes Prince Eric could go, too. At the party Adella wishes that Ariel could stay. That very moment, a rare solar eclipse hits, and Adella's wish comes true! Will Ariel ever be able to break the spell and return to Eric-and her life as a human?