This movie is about a guy who live in his germ-free room for his whole life. He has asthma and plastic wall inside his room. He carries his inhaler around his neck as a precaution. He has this telescope that he use to see his neighbor (kind of like stalking). He see this beautiful girl and decided to see her everyday through telescope.

One day, there this monster (I still not sure if it is a monster or vampire or evil shadow) that kidnapped his neighbor one by one. He tried to warn his family about it but they do not take it seriously (Movie Cliche). In the end, he decided to go out of his room to save the neighbors with the help of the girl.

Do you guys happens to know the title please enlighten my forgetful brain :(

Mimic 3: Sentinel (http://en.wikipedia.org/wiki/Mimic_3:_Sentinel)