I sa2 this movie like 2 years ago… Where the scene opens with a girl in a well and it was all smelly becoz many people have died their… Someone come to rescue her… And they go to their shelter and the plot thickens then when zombies tries to kill them… And they are to survive there…they are a group of scientist and the movie ends again with the hero falling into that pit again after taking an injection which will erase all his memories again