捕らえられたローラを捜すまなつたちは、海の上でゼンゼンヤラネーダに襲われた豪華客船を見つける。一方、何とかあとまわしの魔女の屋敷を脱出したローラは、まなつたちのもとへと駆けつける。
Manatsu and her friends are searching for Laura who was captured, when they come across a cruise ship that was turned into a Zenzen Yarane-da. Meanwhile, Laura escapes the Witch's Mansion, and finds her friends on the cruise ship. That's when a miracle occurs and Laura transforms into Cure La Mer!
La Bruja de la Pereza le hace una propuesta muy interesante a Laura, pero ella se niega. Mientras, Manatsu y las demás intentan rescatar a su amiga.
A Bruxa da Protelação faz uma oferta que mexe com os desejos da Laura. A sereia precisará ser honesta com seus sentimentos para poder ajudar suas amigas!
