When the team realizes they can't hit their delivery deadline on their own, Casey and Jeff convince their dads to come aboard while John helps Josh battle a record Marlin. But when Josh makes a critical trip stateside, he risks catching more than fish.

When sharks take a bite out of their catch, Casey and Jeff must adapt their fishing strategy to outsmart Oahu's apex predators. As Josh returns to help, a visit with an old friend of his father's inspires a bold idea to bring the Cornelia Marie to Hawaii.