Elsa Roth's life at Seaside Sanctuary the marine biology facility where she lives is about to change thanks to a group of river otters. But the adorable animals aren't Elsa's only responsibility a new group of volunteers is also starting at the sanctuary. When a boy named Anson shows up in the group Elsa is less than thrilled. He's nothing but rude and doesn't seem at all interested in animals. But soon Elsa has bigger problems on her hands. One by one the otters are disappearing. Can Elsa get to the bottom of things before more animals go missing?