影片讲述了曾是参与越战,获知许久未见的儿子自杀的消息,虽然被告知儿子是喝醉跳楼自杀,但看着悲伤的孙女、儿子身上奇怪的瘀伤,以及没有喝醉的证据,起光于是怀疑儿子的死因不单纯,警方拒绝重新调查后,起光决定自己找出儿子遇害的原因。。This feature documentary intends to spread the word about Paleo (aka the Caveman diet) and raise public awareness about this healthy alternative to the Standard American/Western Diet (SAD). The film presents the basic tenets of the Paleo movement through the eyes of various characters who have adopted the lifestyle.。