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.
一晃眼六個多月去，杰拉德和利仍然沒有走喪子的悲痛之，就在此時，人意外的收到一封神秘的信，寄信人竟然已經(jīng)死去的兒。在心中，兒邀請父母前往個名叫“死亡”的地方，在里，會有什么待著兩人呢？拉德和艾利踏了前往死亡谷旅途，一路上他們要面對的各自內(nèi)心的黑面，以及隱藏這封信件背后真相?