It's Stewie's first birthday and Lois wants everything to be perfect. She wants to join in on the fun instead of doing all the work. As a result, she books the party at Cheesie Charly's. Peter goes to confirm the reservation and ends up losing it. Peter tells Lois that he will make sure they everything works out fine for the party. He causes a parade/circus route to come right to The Griffin House.
Meg meets a girl named Jennifer, who is the only one who has attempted to befriend Meg. Jennifer invites Meg to a party. Lois wants Meg to be at Stewie's first birthday party but Peter allows her to go to. What Meg doesn't know, is that Jennifer is part of a cult that plans to kill themselves at the party. Lois is angry that Meg isn't at the party so Peter goes to pick her up. Meg and Peter leave just as the rest of the cult kills themselves.
Meanwhile, Stewie believes the party that is being planned is really a plan to return him to the womb. He tries to runaway from The Man in White but then decides to play the offense. The cult leader comes to Stewie's party to retrieve Meg, but Stewie thinks he is The Man in White and kills him with a deathray.