我弟弟的女朋友

故事发生在20世纪90年代，讲述了本已打算金盆洗手的摸金三人组胡八一（张涵予饰）、王凯旋（姜武饰）、Shirley杨（卢靖姗饰）在大金牙的劝说下又操起老本行，但原本以为只是简单任务的他们却因意外身陷危机，不得不重新踏上凶险万分的地下之旅。

　　An L.A. cop discovers a local task force is hiding a secret that puts the residents of his childhood neighborhood in danger.

　　The boisterous, arrogant professor Challenger, a reputed biologist and anthropologist, dares the London Zoological Society to mount an expedition to verify his spectacular claim, without physical proof, that his previous expedition to the Amazonian basin found live dinosaurs. Apart from him and his 'socialite' counterpart, professor Summerlee, it consists of experienced discoverer Lord Roxbury, the young reporter Ed Malone -who got publicly struck down with Challenger's umbrella at his arrival- and Jennifer Holmes, Malone's news agency's boss's daughter, essentially as conditions for putting up the money. In Brazil they are joined by Jennifer's brother David and local 'guide' Manuel Gomez. They soon discover the dinosaurs are real and dangerous, like giant spiders, but loose their helicopter and thus are desperate for a way down from the isolated plateau. They learn Roxbury knew about the fate of Burton White, an explorer whose diary they find, thus presume to be dead, in search of diamonds, and confirmation of the local tribe being the lethal guardians of the plateau's secrets, but also get surprising help...