The irresistibly charming stars help make this adventurous, occasionally swashbuckling ride adaptation amusing, if not as memorable as The Mummy or Pirates of the Caribbean. Johnson can make nearly any character likable; here, Frank's silly, punny jokes are also a fun nod to the Disney ride's vibe. Blunt, likewise, is ideally cast as the pioneering Dr. Houghton. Lily bucks social mores of the time by having a job and a Ph.D., knowing how to defend herself, and even wearing trousers (Frank calls her "Pants"). She also has a refreshingly close relationship with her brother, who's posh and fussy but is still willing to follow her into murky, life-threatening situations. Other members of the cast are underused -- like Paul Giamatti as a local riverboat mogul and Edgar Ramirez as head conquistador Aguirre -- or they overact, like Plemons' caricature of a sociopathic German villain, Prince Joachim.

The movie's landscaping and production art are vibrant and immersive, and director Jaume Collet-Serra should be applauded for making sure to organically include themes of gender, class, and discrimination against the Amazonian natives -- without being preachy. Still, the movie's portrayal of those natives is a bit cringey, even if the movie course-corrects to subvert the same stereotypes it initially seems to be perpetuating. Luckily, Blunt and Johnson cheerfully elevate the story enough to make audiences gloss over some of the screenplay's missteps and enjoy the ride.