Sara is a girl with a temper who loves the outdoors. Her brother Carlos is a hormonal teenager who only thinks about girls and how to avoid doring chores. They drive each other insane, but promised their parents they'd behave on the annual family cruise. But the boat sank, leaving Sara and Carlos on their own. Can the two mend their relationship and survive? And how will they react to anyone else they meet? #usisland #usislandchallenge