It was on netflix, but i can't find it anymore and i can't remember the name! I think the title was 3 words, It was about these teenagers, at the start they were on buses being transported somewhere and they were all split up into groups. they had some sort of medication that they had to take shots of, and the one girl figured it out and realized that it wasn't good for them and there was a guy too. they both went to an old ladies house and she had something to do with it. the story line was kind of hard to follow, i watched it at least a year ago, so it wasn't first out in 2015.
If you know what movie this is or even have any idea, please even then teeniest thing will help. Thanks.