Jim, Michelle, Stifler, and their friends reunite in East Great Falls, Michigan for their high school reunion.

A romantic drama centred on two new lovers: Tyler, whose parents have split in the wake of his brother's suicide, and Ally, who lives each day to the fullest since witnessing her mother's murder.

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.

Jim, Oz, Kevin and Stifler are back -- and hornier than ever! After their first year of college, they reunite and rent a beach house for the summer.

While on a date in a fancy restaurant with Michelle, Jim is ready to propose to her. His father calls to inform him that he has the ring. Michelle misinterprets when Jim stalls the question. Jim's dad arrives as Jim is receiving fellatio, and a mishap grasps the restaurant's attention. Jim proposes and Michelle accepts.

Furious over losing the legal rights to their names used in the reboot of the old "Bluntman & Chronic Movie" they hated, Jay and Silent Bob travel across the USA in an attempt to prevent the film from ever seeing the light of day.