zombie apocalypse

It's the year 2050, There is chaos all across our planet. A group of scientists created a virus that had spread itself trough a gas-leak. The virus brook into a school on November 18th. Every where was panic, no one knew what to do. A group of kids tried to flee with one goal "to get out of the school as fast as possible. But on their way they came across a group of zombies that chased them all over the school.
But it didn't end well for all of them...

If you wanna know what happens next read the book.