Gina was Ryan's boss, also his dream lover. He used to do anything Gina said, because she was the boss.
But now, they were on an uninhabited island because of an air crash. He was a strong and clever man, and Gina was just a girl who was injured. He could carry Gina in his arms. When Gina didn't listen to him, he could keep kissing her to make her learn to behave.
Julie was Gina's friend. She could only rely on Ryan as well.
Then they saved a girl, this girl chose to follow Ryan.
At night, Ryan slept with three girls in the forest. What heaven!
What? One more hot chick! 
...
When Ryan began to enjoy, they found horrible things one by one: limited supplies, survivors who ate the corpse of their friend, and even races feed on humans...