No the preposterous plot doesn't make a bit of sense. Not a single character behaves with any logic at all, but at least they're colourful and energetic enough to keep our interest. The film also looks all wrong; if you know anything about the Amazon (I grew up in South America so I have firsthand experience) you can immediately tell that not a single frame of film was shot there. It's quite obviously Los Angeles and Hawaii, which the credits confirmed. In other words, this film is utterly fake on every level! That said, The Rock proves that he's a decent action hero and Scott is, as usual, a funny comic foil. It's up to the gifted Dawson and bizarre Walken to add a bit more depth and interest. At least both the script and direction have a warped and vicious sense of humour, which isn't a surprise from the director of Very Bad Things. Some of the digital effects are badly overdone and the fight choreography is, frankly, insane ("spinning Tarzan jujitsu!"). But it's still rather good fun, in a deeply annoying sort of way.