A machine from outer space arrives on Earth and leaves twelve-year-old Lulu in the middle of a tropical forest. Edouard, a gruff, unpleasant misanthrope hiding out from the law in the jungle, finds her there. Margaux must find the mysterious machine. She sets off for the Amazonian forest, accompanied by bodyguards from the French Secret Service. She quickly rids herself of the military, only to then cross paths with Edouard, who she forces to act as her guide. Naturally, the encounter of these two people won't occur without causing repercussions…