一封寄给吴邪已故爷爷吴老狗的神秘来信,打乱了吴邪、张起灵、王胖子的退休计划。信件指向外蒙古的一个“彗星”墓,铁三角决定一探究竟,却意外卷入一场超乎想象的冒险。心怀叵测的蒙古悍匪、“彗星”的逃生倒计时、诡异的墓室规则,还有那个看不见的“它”,铁三角不得不放手一搏……。A pilot is sent across the galaxy through a new device. His mission is to orbit and reconnoiter a planet before returning home. The planet is known to be populated by intelligent life. Once at his destination the pilot becomes marooned on the alien planet and soon discovers the planets only inhabitants are predatory machines.。