I need to find a film that I watched in 2000-2010.
I remember the invasion started in a high school football stadium. A group of teenagers figure it out and run home. People look normal but get mind controlled. They know the city got attacked and the thing to defend themselves is a drug(or a substance) they usually use.
I also remember the group has about 5-7 people. They try to escape the city but eventually get discovered. At the end of the day, the group only had 2 people left and end up going to the stadium. They hide and figure out there is a queen-like creature in the stadium and try to use the last dose to kill it. Then one goes out and later comes back to their hideout but the other isn't sure that he(she) isn't controlled.
That is all the plot I can remember. Please help me find it.