Tana Fairchild's life has been planned out since the moment she was born: she is to marry the governor's son and secure an unprecedented alliance between the witches of her island home and the mainlanders who fear the power across the sea.

For years, Tana's coven has released their excess magic into the ocean during the full moon, content to use their gifts for smaller magic, like potent teas or alluring perfumes. But when Tana misses the midnight ritual, she fears her power will consume her… until she meets Wolfe.

Wolfe is from a secret coven, one that practices dark magic and refuses to dull their abilities in accordance to the alliance between the Witchery and the mainland. To help her, he teaches Tana forbidden magic. A magic that makes her feel powerful and alive for the first time.

As the sea grows more violent, her coven loses control of the currents, a danger that puts everyone at risk. Tana can't let the Witchery down… and she also cannot give up Wolfe and the way his wild magic makes her feel. But if she doesn't choose a path soon—duty or love—she'll lose everything to the sea.