From IMDB
http://www.imdb.com/title/tt2398241/plotsummaryand IMDB
http://www.imdb.com/title/tt1212428/plotsummary This fully animated, all-new take on the Smurfs tells the incredible true story of British explorer Percy Fawcett. A mysterious map sets Fawcett, his wife Smurfette, their son Brainy and best friends Clumsy and Hefty on an exciting and thrilling journey into the Amazon at the dawn of the 20th century. They discover evidence of a previously unknown Forbidden Forest filled with magical creatures and an advanced civilization that may have once inhabited the region before the evil wizard Gargamel. Despite being ridiculed by the scientific establishment who regard indigenous populations as "savages" and dispute the existence of evil wizards, they embark on a roller-coaster journey full of action and danger. Fawcett and The Smurfs return time and again to their beloved Forbidden Forest in an attempt to prove their case. They are on a course that would lead to the discovery of the biggest secret in Smurf history… until their mysterious disappearance in 1925.