Two sisters living separate lives on different continents are reunited on a Mediterranean Island. The two barely have time to bond and revive family ties as Kate, the elder, meets a group of locals and agrees to an exciting ride on a hot air balloon. But disaster strikes and as the result of a freak accident, the balloon is carried far out to sea. Their cell phones out of range, and the balloon running out of gas, Kate and her friends are battling for their lives. While, back on land, the younger sister, Liz, has become an unwanted "material witness" to a crime. Matters then take a dramatic twist, one that will mark their lives forever.,泰山基地歪头山会议室中，几十名身着军装的人正围桌而坐，桌子是前世界中相当豪华的那种，能把它从废弃城市中搬出来费了许多力气，军人中大部分是中青年，只有正中是名面相威严的中年人，他是抵抗军总司令徐长胜。……