What events unfold in the “Freaks and Geeks Beers and Weirs episode” that lead to a frenzy among Lindsay’s brother Sam and his friends?

In the "Freaks and Geeks Beers and Weirs" episode, the events that unfold leading to a frenzy among Lindsay's brother Sam and his friends include Lindsay deciding to host a keg party while her parents are away. This decision sets off a chain of chaotic events, such as unexpected guests showing up, awkward encounters, and teenage shenanigans. The party spirals out of control, creating a frenzy among Sam and his friends as they navigate the ups and downs of high school life in the 1980s.