When Blu, a domesticated macaw from small-town Minnesota, meets the fiercely independent Jewel, he takes off on an adventure to Rio de Janeiro with the bird of his dreams.

Two mismatched New York City detectives seize an opportunity to step up like the city's top cops, whom they idolize, only things don't quite go as planned.

After getting a restraining order from Randal Graves (''Clerks'') for Illegal drug trade outside the Quick Stop, Jay and Silent Bob find out from Brodie Bruce (''Mallrats'') that ''Bluntman and Chronic'', the comic book based on their likenesses, has been adapted into a film in production by Miramax Films. In response, the two visit Holden McNeil (''Chasing Amy''), the co-writer of ''Bluntman and Chronic'' and demand royalties from the film. However, Holden tells Jay and Silent Bob that he sold his part of the creative and publishing rights of the comic over to his former friend Banky Edwards. Upon learning of the film, as well as the negative reaction it has received so far on the internet, the two set out on a quest to Hollywood, to prevent the film from being made and tainting their image, or at the very least receive the money from the royalties owed to them.

Spix's Macaws Blu and Jewel and their three children—Bia, Carla, and Tiago—are living happily Rio de Janeiro until Jewel realizes that her children are becoming more like humans. Meanwhile, Blu's former owner, Linda Gunderson and her Ornithology husband, Tulio are on an expedition in the Amazon rainforest and, after a fall down a waterfall, discover a quick-flying Spix's macaw that loses one of its feathers. When word gets out about this through television, Jewel believes that they should go to the Amazon to help find the blue macaws. While the kids are ecstatic, Blu is uncertain, but he is pressured into going along. Rafael, Nico and Pedro decide to come along. Luiz attempts to follow but fails. Blu brings a fanny pack full of supplies, one of which he uses mostly is a Global Positioning System, much to Jewel's displeasure.