A young girl has always loved Mermaids. Every day she wishes she could be friends with one. And on one magical day, her wish comes true.

Nestled on the beach, a place between their two worlds, these unlikely friends discover imaginative ways to go on many adventures. But will one stormy night drive them apart?

From the New York Times bestselling author and illustrator of Dad By My Side comes a gorgeously depicted story bursting with whimsy and imagination that celebrates the power of friendship.