>"evil" government facility teaching a bunch of 2nd gen zombie children while doing "evil" experiment on to to find a vaccine (they at least drug the kids first before cutting their brains out)
>military personnel treat these little fuckers like they are monsters (they pretty much eat only raw meat and will eat your face if given chance) but mostly just keep them at distance and avoid emotional connection
>some smart kid doing really well in "class"
<entering a white bleeding heart liberal teacher "you can't treat them like monster"
>our bright little star smartarsed a sarge and end up cuffed to the chair for the night
<teacher broke several procedures trying to help and nearly got nom'd
>kid volunteered herself for the cutting up
>the base starts getting overrun
<teacher storms the lab demand the doctor to release the kid "I didn't sign up for this" and "we're evil doing this"
>"well, no shit we are. But we could actually help people with the result" and MACE'd her
>base overran, kid escaped, actually attacked and eat 2 people
<teacher could see again, saw the all bloody kid went "yep, the kid is totally safe" and drag her to the nearest escaping truck
>sarge and doctor are on the truck so they nearly blow the kid's brain out but "no, she's safe"
>some shit happened including kid acting like a zombie, a group of 2nd gen zombie kids acting like a small tribe hunting human, a really big tree that would release an airborne zombie plague dooming every remaining human if burned and everyone bonding with the kid
>they found a mobile lab and doc tried to gas the kid to make the vaccine
<unfortunately for the evil doctor, the kid is a fucking zombie who doesn't really need as much air as normal human
<"Am I HUMAN yet, doctor?" "yes" then she ran away
>doc gives chase right into the tribal kids and got nom'd
<the totally human kid now then process to burn the bigass tree which of course now releasing the plague killing everyone
>sarge woke up from the gas, not seeing the kid so he ran out and die to the airborne plague Oopsie
<the only human left is the teacher who got stuck forever in the airtight lab without any food being forced to teach a bunch of zombie kids who are outside and acting like cavemen most of the time
This ending is presented as an upbeat ending for some reason.