Two sisters residing separate lives on completely different continents are reunited on a Mediterranean Island. The 2 barely have time to bond and revive household ties as Kate, the elder, meets a gaggle of locals and agrees to an thrilling experience on a sizzling air balloon. However catastrophe strikes and as the results of a freak accident, the balloon is carried far out to sea. Their cell telephones out of vary, and the balloon working out of fuel, Kate and her pals are battling for his or her lives. Whereas, again on land, the youthful sister, Liz, has grow to be an undesirable "materials witness" to a criminal offense. Issues then take a dramatic twist, one that may mark their lives perpetually.