Craving an adventure to wake them from their lethargic Mexican holiday before they return home, four friends set off in search of one of their own who has travelled to the interior to investigate an archaeological dig in the Mayan ruins. After a long journey into the jungle, the group come across a partly camouflaged trail and a captivating hillside covered with red flowers. Lured by these, the group move closer until they happen across a gun-toting Mayan horseman who orders them away. In the midst of the confrontation, one of the group steps inadvertently backwards into the flowering vine. And at that moment their world changes for ever...