Kyle announces that as a birthday treat, his mother Sheila is taking him and three of his friends to Casa Bonita. Cartman's initial joy is crushed when Kyle says he is taking Stan, Kenny, and Butters instead of Cartman, due to his rampant anti-Semitism. Cartman decides to prove that he is actually nice, but since kindness is such a foreign concept to him, his first attempts are unsuccessful. Eventually, he succeeds by apologizing for his actions and Kyle is touched, and tells him that if Butters is, for some reason, unable to attend, Cartman can. Cartman subsequently tells Butters that a meteor is about to hit Earth and hides him in a bomb shelter, so that he does not appear in time for the trip.