Two naked survivalists are challenged to survive for 21 days in the Costa Rican rainforest, despite a deadly snake bite on a producer. Kim is paired with Shane. They encounter challenges including rain, illness, shelter fire, and a snake attack.这(🔞)个山洞，宽约速十米、高(gāo )约五米，山洞里面没(🐣)有光芒，只(zhī )有从外(wài )面撒(sā )进一些光芒，照亮了山洞门口(kǒu )的一(😔)点点地方。