In THE SEA BEAST, sea monsters have been nearly eradicated from the shores of the kingdom of Three Bridges, thanks to the help of the brave monster hunters. But there's one beast that continues to evade them: the Red Bluster. Captain Crow (voiced by Jared Harris) of the Inevitable is consumed by vengeance and wants to kill the beast that took his eye. He strikes a deal with the king and queen, who've built their own ship and threaten to fire the hunters if they aren't able to bring in the Red Bluster after one last try. When the hunters head back out to sea, they realize they have a stowaway: a young orphan named Maisie (Zaris-Angel Hator), whose parents died on a monster-hunting ship. She, too, wants to be a hunter and learn from the best aboard the Inevitable. But along the way, she begins to discover that what she thought she always knew may not be as it seems. She befriends Jacob (Karl Urban), the future captain of the Inevitable, who's brave and quick on his feet. As the exciting story unfolds, the pair learn that there's sometimes more to things than meets the eye.