Some info and a short description of this South Park episode on South Park Zone:
South Park - A Ladder to Heaven is episode 91 of the Comedy Central series South Park. It was originally broadcast on November 6, 2002.
Stan, Kyle and Cartman have won an all-you-can-grab candy prize but cannot claim it without the stub of the ticket they bought. The boys build a ladder to heaven to talk to Kenny about a candy coupon.
Unfortunately, the Japanese start building their own ladder to Heaven, the government intervenes and the event is chronicled in a lame country music song.
South Park Spoiler Alert!
(The complete plot for this South Park Episode)
The boys won an all-you-can-grab candy prize at Lolly's Candy Factory and they have come to claim their prize. However, they realize that they gave the ticket to Kenny to hold on to before he died, because the rest said they would lose it.Upon visiting Kenny's house, the boys are shown the urn containing his ashes, which they steal during the next night. However, having never heard of cremation, they expect to find Kenny's body and are confused when they find ashes inside. Cartman assumes it must be some kind of chocolate milk powder. He mixes the ashes with milk and drinks Kenny literally.
The boys decide to build a ladder to Heaven to find Kenny so he can tell them where the ticket is. The adults, who think that the boys only want to see their dead friend again, are touched by their concern for their friend. The whole country gets involved in supporting the ladder to heaven, and even Alan Jackson is there to sing his song and "capitalize on people's emotions".
After a while the boys announce they have run out of stuff to build the ladder, the adults consider telling them the truth that they are not actually going to reach Heaven. However, just then the United States military arrives and starts to build a reinforced tower in order to beat the Japanese. The ladder eventually reaches above the clouds and the boys are disappointed to find no heaven. Yet just then the military arrives and starts to build a reinforced tower in order to beat the Japanese to heaven.
Suspicious photos taken of heavenly clouds are reported to the President as indicating a potential factory making WMDs run by Saddam Hussein, now dead and permanently living in Heaven. The U.S. decides to bomb Heaven, believing Hussein to be building nuclear warheads there. A U.S. representative explains the whole Satan/Saddam/Chris love triangle story to a bemused United Nations assembly.
Meanwhile, Cartman starts channeling Kenny and viewing his memories every time something hits his head. After the adults try to tell the boys to get back to their lives and explain cremation to them, Cartman realizes that this is because he drank Kenny's ashes. After getting intentionally hit on the head a few more times, Cartman witnesses Kenny locking up the ticket in a box he kept in his room. The boys retrieve the stub, collect their confectionery and lose all interest in the ladder. The whole misunderstanding is explained and various platitudes exchanged, which Alan Jackson tries and fails to turn into an umpteenth song.
The episode ends with a shot of heaven, where Saddam Hussein is in fact building a WMD factory, disguised as "Saddam's Heavenly Chocolate Chip Factory". When God suspects this, Hussein uses reverse psychology by saying, "Look God, if I was building a chemical weapons plant, I wouldn't make it look like a chemical weapons plant, would I? No! I would make it look like a chocolate chip factory or something," which God promptly falls for. Saddam exits laughing.