The original ending? Not so happy.

The plane Gerry and Segen board is bound for Moscow. Upon safely landing, everyone on board is rounded up by the military. The elderly and the sick are executed and the healthy people, including a very shaken Gerry, are immediately drafted into armed service, though not before one particularly nasty Russian soldier takes Gerry's cell phone. The story then jumps forward an unknown amount of time and we catch up with Gerry, who now has a full beard and has been a part of Russia's zombie-clearing squad at least long enough for it to have changed to winter. He looks almost dead inside, but the reality is that over this time he's become an experienced and ruthless zombie killer, and he's the leader of his own equally capable unit.

Gerry's unit is tasked with clearing subway tunnels of zombie hordes. This is the first time we see the Lobo, a perfected zombie-killing tool that's sort of a shovel/battle axe that would have been one of the few things from the book to make it into the movie. Gerry and his team use them to slice their way through every poor zombie that tracks them through the tunnels by following their sounds. It's all routine work for them, and when they're not in the tunnels killing, they're basically just preparing to go back in. During this downtime we see a bit of bonding between Gerry and another English-speaking friend, Simon. The two play a guessing game of what celebrities would have survived the outbreak.

We get a couple intense scenes of tunnel combat (at one point Gerry has to kill one of his own after being bitten), and eventually they emerge above ground and are right in the middle of the Battle of Red Square (pictured in the banner above, though this is likely not from the movie and was created just for marketing purposes). This is a much, much larger set piece that involves several different front lines constantly fighting the hordes. There's a kind of weird plot point of Gerry's team now getting reassigned to different front lines based on what their religion is (Gerry and Simon are atheists), the logic being that people would fight harder alongside people of the same faith. But they're segregated and Gerry tries to convince the general in charge that his elite, tunnel-sweeping crew should be allowed to teach those other people how to fight with Lobos and makeshift shields and what not.

There's arguing with this Russian general, but eventually Gerry convinces him to let him teach some of the other front lines how to fight, but this involves having to go back into the tunnels with Simon so they can sneak past the zombies on the other side. It's there that Gerry notices the zombies are having a hard time dealing with the severe Russian winter by remembering just how fast they were in Jerusalem, and so it occurs to him that the way to defeat the zombies is to let their bodies freeze.

Gerry and Simon are now on a mission to inform the Russian command to extinguish all fires and move their battle lines so as to keep as many of the zombies in the cold as possible, but then they run into a generator room where the nasty Russian soldier who took his phone upon arrival in the country is boozing it up with some very reluctant girls. One of those girls is Segen. Gerry grabs a belt of grenades and tosses one into the room. He, Segen and Simon duck behind a couch to survive the blast before making a break for it.

Once again Gerry meets up with the general and convinces him to use Russia's cold to their advantage, as they have done in past homeland wars. This works and he orders everyone to extinguish all of their fires. Eventually this gives them the upper hand in the battle. Gerry takes this turn toward the offensive to retreat. He takes a couple of shots of vodka, then picks up the phone he retrieved from the soldier and calls his wife, Karin.

Even beyond the entire Russian battle sequence, it's this call to his wife that's the real game changer for the (aborted) tone of World War Z.

Gerry reaches Karin. He explains to her that the cold is the way they'll win battles, which does her no good because it just so happens she and the kids are in a refugee camp in the sweltering heat of the Everglades. They're in the type of camp where you have to have something to trade to survive, and it just so happens the one thing Karin had to trade was herself. She doesn't explicitly tell Gerry this, but after she hastily hangs up the phone we see that she's in some kind of reluctantly consensual relationship with the soldier who rescued them from the rooftop at the beginning of the movie.

Did you happen to notice that soldier on the helicopter was played by Matthew Fox? Did you wonder why they bothered to cast someone as recognizable as him in a role that was pretty inconsequential and had almost no lines? That's because his real payoff wasn't until the end.

Fox' parajumper soldier then calls Gerry back and explains to him that he should just stay wherever he is and start a new life like he and Karin have. Gerry refuses to accept this, though, and he embarks on a rage mission to get back to his wife and daughters. Trouble is the nearest port that won't be frozen is thousands of miles away, so there's a montage of Gerry, Simon and Segen crossing various terrain until they ultimately end up on a boat. They're now off of the Oregon coast and they attack the American shore like it's D-day. And that's how the movie ends. Not with Gerry having discovered a cure, but with him storming across the United States of America to get Karin back.

That's a bit of a weird ending, right? It's certainly wildly different than what was in the final film. We don't know just how much of it Paramount ended up filming before the studio realized audiences probably weren't going to like an ending where Karin was trading her body in order to keep her kids safe while Gerry was hiking across frozen tundra. It's actually a little surprising that all involved thought that this would have been a crowd-pleasing ending in the first place, though it would have set up the plot for a sequel. One would assume they filmed at least some of the Russian battles -- if you check the film's full cast credits on IMDb you can find roles like "Lobo Worker Aleftyina," "Gerry Lane's Recruit" and "Russian Zombie." And then there are these set photos, which show Gerry and Segen on the deck of a snow-covered ship, which would have taken place during Gerry's journey back to America.

 제리와 세겐(여군)이 탄 비행기는 모스코 행이었습니다. 안전하게 착륙 후, 모두 군대에 의해 소집됩니다. 노인과 병자들은 처형되고, 제리를 포함한 건강한 사람들은 징집됩니다. 러시아 군인중 한 명이 제리의 휴대폰 가져가게 됩니다. 시간이 많이 지나 겨울이 된 후, 제리는 수염이 나 있으며 좀비 퇴치부대 일원이 됩니다. 전문적인 좀비킬러가 되며 그리고 자기 부대의 지도자가 된다는 군요.

제리의 부대는 지하철 터널의 좀비 떼들 퇴치 작전을 맡게 됩니다. 여기서 Lobo라는 좀비학살용 무기 소개(삽/도끼, 원작에서 나온다고 하는군요). 제리와 팀은 소리를 따라오는 모든 좀비를 죽입니다. 이 때 제리와 다른 영어를 하는 친구 사이몬이 유명 인사들이 이 재난에서 생존했다면 어떻게 되었을지 얘기를 나누는 장면이 있었다고 합니다.

약 두 번의 터널 전투 씬이 있었다고 하는 군요(물린 자기 부대원도 죽인다내요). 마침내 그들은 지상으로 올라오는데 이 때 붉은 광장 전투에 휘말리게 된다고 합니다. 이 때 특이하게 같은 종교를 믿는 사람들 끼리 군대가 편성된다고 합니다. 제리는 지휘하는 장군에게 자기 부대원들이 다른 사람들에게 Lobo사용법 등을 가르치는 것을 제안한다고 합니다.

결국 설득에 성공하고, 이 때 사이몬과 제리가 터널로 다시 되돌아가야 하는 일이 생깁니다. 이 과정에서 좀비들이 추위에 약하다는 것을 깨닫고 좀비들을 얼리는 것이 그들을 물리치는 방법이라는 것을 생각해 냅니다.

제리와 사이몬은 러시아 본부에 모든 불을 끄고 좀비들을 춥게 하도록 알려야 하는데, 발전소에서 여자들에게 집적되는 러시아 군인을 만납니다(제리의 휴대폰을 가져간 군인). 그 중 세겐도 있답니다. 그는 수류탄을 던지고 세겐, 사이몬과 제리는 탈출합니다.

제리는 장군과 만나 이를 건의하고 그들은 전투에 우위를 차지하게 됩니다. 그는 다시 되찾은 휴대폰으로 자신의 아내, 카린에게 전화를 하게 됩니다.

제리는 카린에게 추위가 이길 방법이라고 설명합니다. 그러나 그의 가족은 무더위 속의 난민 캠프에 살고 있는데 여기서 살아남기 위해 카린이 몸을 판다고 하는군요.

또한 헬리콥터에 탄 군인 중 배우 매튜 폭스가 있는데, 거의 대사도 없는 이유가 결말부분에서 비중이 있다는 군요.

폭스는 제리에게 다시 통화해 자신과 카린처럼 그냥 그곳에서 새 삶을 시작하라고 하는데, 제리는 이를 거절하고 다시 되돌아가기 위해 노력을 한다는 군요. 제리, 사이몬과 세겐은 먼 길을 거쳐서 배에 도달하게 되고 가시 카린을 되찾기 위해 여행을 시작하는 것으로 영화는 끝난다는 군요.

이 부분들은 어디까지 촬영됬는지는 확실하지 않다는 군요.