Los Angeles is a crowded place. Sound of airplanes pollutes the sky every hour or so. There's always congested traffic. The pizza is bad. This is not the place where Charlie belongs. In a city with 13 million people, he's never felt more alone in his life. Then along came you, the next door neighbor that got an unpleasant first impression of him and made sure to say your sentiments right exactly at his face. Suddenly, Charlie is not that alone anymore.