In 1840s England, palaeontologist Mary Anning and a younger girl despatched by her husband to convalesce by the ocean develop an intense relationship. Regardless of the chasm between their social spheres and personalities, Mary and Charlotte uncover they'll every provide what the opposite has been trying to find: the realisation that they aren't alone. It's the starting of a passionate and all-consuming love affair that may defy all social bounds and alter the course of each lives irrevocably.