Kiki Coral is thrilled beyond words when she meets a brand-new friend: a baby polar bear! The problem is, the little bear, whose name is Nestor, has floated away from home on a patch of ice and now he's lost, hungry, and all alone!

Kiki, Shelly, and Echo want to send Nestor back to his home on the Manta Ray Express, but a one-way ticket costs a whopping four jewels! That's a fortune! Not to mention, all anyone at school can talk about is the Rays, who are performing a concert in Poseidon. Kiki loves the cute boy band as much as the next mergirl, but what about Nestor? Isn't saving him more important than a concert?

Can Kiki and her friends find a fun way to send their new furry friend home--and hang out with the Rays in the process?