Sea Unicorn, The

The Arctic mermaids urgently need the Sea Keepers' help! Evil mermaid Effluvia is back and she has used her bad magic to melt their ice palace. If Emily, Grace, and Layla can't fix it, the animals the mermaids look after will be in danger. The Sea Keepers are determined to save the sea animal sanctuary, but Effluvia has enchanted a pod of orcas to stop them. Can a friendly narwhal help them find the magic pearl and save the ice palace?