True crime podcasters Piper and Cam have travelled to the sleepy seaside town of Findlay to investigate the disappearance of a woman nearly a decade ago. The theories are wild—everything from murder to mermaids, and Piper is determined to get to the truth. Battling her fear of the ocean, Piper soon realizes Findlay has deeper, darker secrets than she could ever have believed. As she struggles to master her fear and deal with her unrequited love for Cam, Piper is lured into perilous waters. The truth waits beneath the waves—and Piper's fate waits with it.