交换：朋友的妻子4

林宇与三名女孩遭遇空难，不幸流落至一座荒无人烟的孤岛，刚上岸便遭遇一头凶猛的变异双头蛇袭击。危急时刻，容貌靓丽、身手矫健的当地女土著颂雅及时出现，凭借对岛屿环境的熟悉，成功引开双头蛇，将四人救至一处隐蔽山洞。在艰难的孤岛求生中，林宇作为唯一的男性主动守护众人，朝夕相处间，他与四名女孩渐生情愫，陷入了两难的感情纠葛。好景不长，思瑶惨遭双头蛇伏击吞噬，若琳也不幸遇害。悲痛之下，林宇、婉晴与颂雅联手，借助颂雅祖辈流传的经验，摸清毒蛇怕强光和特定植物汁液的弱点，巧用简易工具设下陷阱，最终成功消灭双头蛇，林宇也找到情感的归宿。

珍妮曾被誉为“钢琴天才”，但她因冤案而被判入狱15年。当她遇到有歌唱天赋的叙利亚战争难民奥马尔时，她同意在电视音乐选秀节目中为他弹钢琴伴奏。在她的牢狱生活期间，她的初恋弗莱舍成为了一名流行歌星，并担任了音乐选秀比赛的评委，而珍妮和奥马尔则是其中很有望胜出的选手之一。在狱中度过这些痛苦的岁月后，现在是珍妮做出选择的时刻：是报复，还是幸福和未来？

　　Shipwreck survivors are found on Beiru Island (Infanto tô), which was previously used for atomic tests. The interior is amazingly free of radiation effects, and they believe that they were protected by a special juice that was given to them by the island's residents. A joint expedition of Rolisican and Japanese scientists explores Beiru and discovers many curious things, including two women only one foot (30 centimeters) high. Unscrupulous expedition leader Clark Nelson abducts the women and puts them in a vaudeville show. But their sweet singing contains a telepathic cry for help to Mothra, a gigantic moth that is worshiped as a deity by the island people. The giant monster heeds the call of the women and heads to Tokyo, wreaking destruction in its path.

影片以一部“本应播出却被紧急叫停的纪录片”为线索，记录了一名男子与三位妻子共同生活的影像。网页设计师萩原浩司、作为家庭经济支柱的公司经营者中濑由子、前模特乾真理奈，以及护士内野枫——四名相关人士被召集到一起，观看了一段丈夫被杀害的录像。然而，随着影像逐渐展开，三位妻子却先后承认： 凶手是自己。爱、依赖、嫉妒与谎言交织在影像背后，纪录片的真实目的也随之变得模糊。这部被“禁止播出”的影像，究竟隐藏着怎样的真相？