TwosisterslivingseparatelivesondifferentcontinentsarereunitedonaMediterraneanIsland.ThetwobarelyhavetimetobondandrevivefamilytiesasKate,theelder,meetsagroupoflocalsandagreestoanexcitingrideonahotairballoon.Butdisasterstrikesandastheresultofafreakaccident,theballooniscarriedfarouttosea.Theircellphonesoutofrange,andtheballoonrunningoutofgas,Kateandherfriendsarebattlingfortheirlives.While,backonland,theyoungersister,Liz,hasbecomeanunwanted"materialwitness"toacrime.Mattersthentakeadramatictwist,onethatwillmarktheirlivesforever.重新选择了主要河(📅)流的方(fāng )向，陈(chén )天豪把自己的飞行速(sù )度提升到极限。