After Echo Fisher loses his grandfather, he stumbles on a journal detailing the location of a hidden, underwater cave filled with priceless dolphinkind relics. The only issue? It's in orca waters. Crossing the boundary could start another war... but the need to prove his grandfather wasn't the flake everyone in the pod thought pushes him to do the unthinkable. During his regular patrols, Maelstrom Marino notices the little dolphin shifter sitting close to the line, spying on orca waters. When Echo finally gets the nerve to cross the boundary, Mael swoops in... but almost too late. Another predator has Echo in their sights, and they're a lot closer than he is. Echo barely makes it out of orca waters alive-but the danger is only beginning. The following night, the orca who saved him shows up and demands to know what was so important that he'd threatened the treaty. Mael won't leave without answers, and he's not against persuasive seduction to get what he wants.