Una cadena de terremotos ha sacudido la Tierra y regiones enteras han quedado sumergidas bajo el agua. Los humanos viven ahora hacinados en ciudades. Los únicos que poseen un espacio propio son los habitantes...

Return to the subsea frontier with Ty and Gemma, where the mysteries of the deep are deadlier than ever. With time running out for his parents, Ty's desperation leads the two teenagers to the underwater...

Ty has lived under the ocean for his entire life. Following global warming and the rise of the seas, his family joined an underwater community in hopes of living in the new frontier of the ocean floor....