Mr. Mackey is suspended, rather than fired, when during his drug & alcohol prevention lecture a sample of marijuana he passed around has disappeared. Kyle invites the others to come over to his brother's Bris. Stan discovers what a Bris is, they are going to chop off his wee-wee. The boys try to save Ike's penis from being chopped off. So Kyle takes Ike and puts him on a train to Nebraska and makes a fake Ike out of old bones from the butcher shop and other things. The fake Ike is killed after a dog grabs the body -- rips off its head and takes it into the street, only to be hit by a gasoline tanker truck. When his parents bury the body, Kyle finds out his brother wasn't really his brother after all, he was a baby his parent's adopted from Canada. Kyle no longer cares about his little brother, until he sees that his little brother still cares for him. They find out a Bris means that the penis will look bigger after is completed. Meanwhile an unemployed Mr. Mackey falls into a life of alcohol and drug use, which eventually gets him a trip to the Betty Ford clinic.
Kenny dies when he falls into a grave and the tombstone falls and crushes him.