At the Quahog Gay Pride Day festivities, in a raffle sponsored by Weenie and the Butt,
Brian wins tickets to see
Celine Dion in
Las Vegas. As they prepare to travel,
Stewie convinces Brian to use the new
teleportation device he has been working on instead. A flash of light reveals a disappointed Stewie and Brian standing on the device's platform, and they head off to the airport, but they do not realize that the machine produced an identical Brian and Stewie pair who were immediately transported to Vegas. The original Brian and Stewie then travel by plane to Las Vegas. As the duplicate pair check into the
Bellagio, their luck makes itself present immediately with duplicate Brian winning a large jackpot at the slot machines. The original Brian and Stewie arrive and find their room has been already taken. As the duplicate pair have the time of their lives with delicious food, great nightlife, and a freshly purchased
Ferrari that they use to kill a bunch of people in front of an
Ed Hardy store, the original pair find themselves in a third-rate hotel nowhere near the Strip. Trying their luck in the hotel's slot machine, they quickly lose all of the money they brought. The original Brian is ready to go home but Stewie admits that he already gambled away their plane tickets. Brian admits he cannot call for help after taking money from
Lois. Using money they got from a
loan shark, they bet on a basketball game and lose again. The duplicated pair accidentally take the empty backpack from the unlucky pair; the original Stewie unknowingly takes the duplicated pair's backpack, which is full of cash. As the pairs go their separate ways, an enforcer for the loan shark catches up with the duplicate pair (mistaking the clones for the originals) to get the money back and discovers to his fury and their shock that they have no cash. The enforcer orders Brian to either accept his own death or sacrifice Stewie. Brian initially refuses to choose but when he panics, he tells the enforcer to shoot Stewie. A disgusted Stewie is murdered by a gunshot to the head, and the enforcer threatens to kill Brian unless he gets the money by the next day. Meanwhile, the original pair face their impossible situation of being unable to get the money or go back home, and Brian agrees with Stewie's proposal that they commit suicide. They prepare to throw themselves off the top balcony of the hotel but Stewie chickens out at the last second, leaving Brian to fall to his death. A panic-stricken Stewie trips over his backpack and finds the money the other pair had won. Returning home the next day, the duplicate Brian and original Stewie bump into each other at the bus terminal. Stewie realizes that the device had made clones of themselves. The two deceive each other about how their respective friend's deaths transpired, before the original Stewie, remembering the original Brian's confession about Lois' stolen money, hides it away from the duplicate Brian to stop him from getting greedy and to allow himself to return Lois' money. The two then return home while the duplicate Stewie and original Brian greet each other coldly at the
pearly gates of
Heaven. ==Production and development==