Today is Lily Rose's 9th birthday! She receives a special gift that turns out to be more magical than she could have ever imagined. Lily's pearl crown has the power to transform her into a mermaid! Join Lily as she adventures to the bottom of the sea to save the mermaid kingdom from the clutches of the evil Sea Witch. Fear not! Lily has the help of her new mer-friend Sapphire to join her on this adventure.