k3 and the song of the mermaid

Hanne, Marthe, and Julia are having the vacation of a lifetime in the coastal village of Porto Sirento—enjoying the sun, sea, beach, and each other’s company while dancing and singing. Their perfect holiday is abruptly turned upside down when a mysterious spell transforms them into beautiful mermaids. To avoid standing out, they must steer clear of water, which is easier said than done in a seaside town. Danger is ever-present, as the locals inexplicably view mermaids as monsters. Upon discovering that they have only three days before the transformation becomes permanent—meaning they’d be mermaids forever and no longer K3—they embark on a race against time to break the spell.