When 21-year-old Oli sets sail from Australia she embarks on a trip that will open her eyes to life's possibilities. Some years later, fluent in the language of the ocean, she is the only female crew member on-board a yacht delivery to New Zealand. There, in the darkness below deck, she learns something new: at sea, no one can hear you scream. About the moments that haunt us, that fan out like ripples through the deep.