Baker Dill (MATTHEW MCCONAUGHEY) is a fishing boat captain who leads tours off of the tranquil enclave of Plymouth Island. His peaceful life is soon shattered when his ex-wife Karen (ANNE HATHAWAY) tracks him down. Desperate for help, Karen begs Baker to save her - and their young son - from her violent husband. She wants him to take the brute out for a fishing excursion - then throw him overboard to the sharks. Thrust back into a life that he wanted to forget, Baker now finds himself struggling to choose between right and wrong.