The daughter of King Neptune takes on human form to avenge the death of her young sister, who was caught in a fishing net. However, she falls in love with the king, the man she holds responsible.

• Universal Film Manufacturing Company
• Annette Kellerman
• William E. Shay
• William Welsh
• Leah Baird
• Mrs. Herbert Brenon
• Edmund Mortimer
• Lewis Hooper
• Mrs. Allen Walker